Title of Invention

"THIAZOLYL OXADIAZINE COMPOUNDS OF FORMULA II"

Abstract A compound of the formula wherein Y is NO2 or CN, and R3 is H or unsubstituted or R4-substituted C1-C8 alkyl, n is 0, 1 or 2, R4 is an unsubstituted or mono- to tri-substituted phenyl naphthyl or heteroaryl group (heteroaryl being a 5- to 7-membered aromatic residue with one and up to and including three ring heteroatoms selected from the group consisting of N, O and S) the substituents of which are selected from the group consisting of halogen, NO2, CN, C1-C4 alkyl, C1-C4 alkoxy, halogen-C1-C4 alkyl and C1-C4 alkoxy; R6 is unsubstituted or R8-substituted C1-C8 alkyl, unsubstituted or R8-substituted C2-C8 alkenyl, unsubstituted or R5-substituted C2-C8 alkynyl, C3-C6 cycloalkyl, an unsubstituted or mono- to tri-substituted phenyl or naphthyl group (the substituents of which are selected from the group consisting of halogen, NO2, CN, C1-C4 alkyl, C1-C4 alkoxy, halogen-C1-C4 alkyl and C1-C4 alkoxy), heteroaryl (heteroaryl being a 5-to 7-membered aromatic residue with one and up to and including three ring heteroatoms selected from the group consisting of N, O and S), SR7, (C1-C8 alkylene}SH or (C1-C8 alkylene)SR7, R7 is unsubstituted or R4-substituted C1-C8 alkyl, unsubstituted or R4-substituted C2-C8 alkenyl, unsubstituted or R4-substituted C2-C8 alkynyl, C3-C6 cycloalkyl, an unsubstituted or mono- to tri-substituted phenyl or naphthyl group (the substituents of which are selected from the group consisting of halogen, NO2, CN, C1-C4 alkyl, C1-C4 alkoxy, halogen-C1-C4 alkyl and C1-C4 alkoxy), heteroaryl (heteroaryl being a 5- to 7-membered aromatic residue with one and up to and including three ring heteroatoms selected from the group consisting of N, O and S).
Full Text The present invention relates to a thiazolyl oxadiazine compounds of formula II.
The invention relates to a process for preparing a compound of the formula
(Formula Removed)
in which
X is CH or N,
Y is NO2 or CN,
Z is CHR3, O, NR3 or S,
R1 and R2 are either each, independently of the other, unsubstituted or R4-substituted alkyl or together a two- or three-membered alkylene bridge or a two- or three-membered alkylene bridge in which one member is replaced by a hetero member selected from the group, consisting of NR5, O and S,
R3 is H or unsubstituted or R4-substituted alkyl,
R4 is unsubstituted or substituted aryl or heteroaryl, and
R5 is H or alkyl,
which comprises
a) reacting a compound(Formula Removed)
of the formula in which X, Y, Z, R! and R2 are as defined for the formula I,
n is 0, 1 or 2,
R6 is unsubstituted or R8-substituted alkyl, unsubstituted or R8-substituted alkenyl,
unsubstituted or R8-substituted alkynyl, cycloalkyl, unsubstituted or substituted aryl,
heteroaryl, SR7, (alkylene)SH or (alkylene)SR7,
R7 is unsubstituted or R4-substituted alkyl, unsubstituted or R4-substituted alkenyl, unsubstituted or R4-substituted alkynyl, cycloalkyl, unsubstituted or substituted aryl, heteroaryl or a group of the formula
(Formula Removed)
In which X, Y, Z, R1 and R2 are as defined for the formula II, and
R8 Is an unsubstituted or substituted aryl or heteroaryl group, -COOH, COOM, wherein M
is an alkali metal, or -COO-C1-C8-alky!, with a chlorinating agent, or
b1) Initially reacting a compound of the formula
(Formula Removed)
in the free form or the form of a salt,
in which R6 and n are as defined for the formula II and X1 is a leaving group, In the presence or absence of a base, with a compound of the formula
(Formula Removed)
which is known or which can be prepared by methods known per and in which R1, R2, X, Y and Z are as defined for the formula I, and
b2) further reacting the compound of the formula II obtainable thereby, with or without intermediate isolation, with a chlorinating agent,
to intermediates used In this process, to the use of these intermediates and to a process for the preparation of these intermediates.
The existing processes for preparing the compounds of the formula I require as starting material inter alia 2-chloro-5-chloromethylthiazole. The latter, however, is harmful on direct contact, and there is therefore a need to replace this compound by harmless compounds. This object is achieved by the preparative process according to the Invention.
The general terms used hereinbefore and hereinafter have, unless defined otherwise, the meanings listed below:
Carbon-containing groups and compounds each contain, unless defined otherwise, 1 up to and Including 8, preferably 1 up to and including 6, In particular 1 up to and Including 4, especially 1 or 2 carbon atoms.
Halogen is preferably chlorine or bromine.
Alkyl - as a group per se and also as a structural element of other groups and compounds, for example alkoxy and alkylthlo - is, in each case with clue regard to the number of carbon atoms contained in the respective group or compound, either straight-chain, I.e. methyl, ethyl, propyl, butyl, pentyl or hexyl, or branched, for example Isopropyl, Isobutyl, sec-butyl, tert-butyl, isopentyl, neopentyl or isohexyl.
Alkenyl and alkynyl are straight-chain or branched and each contain two or preferably one unsaturated carbon-carbon bond(s). The double or triple bonds of these substituents are separated from the remainder of the compound II preferably by at least one saturated carbon atom. Examples Include allyl, mathallyl, but-2-enyl, but-3-enyl, propargyl, but-2-ynyl and but-3-ynyl.
Cycloalkyl oyolopropyl, oyolobutyl, cyclopentyl or oyclohoxyl, preferably cyclopropyl.
Alkylene - as a group per se and also as a structural element of other groups and compounds, such as (alkylene)R7 - Is, in each case with due regard to the number of carbon atoms contained In the respective group or compound, either straight-chair, for example -CH2CH2, -CH2CH2CH2 or -CH2CH2CH2CH2-, or branched, for example -CH(CH3)-, -CH{C2H6)-, -C(CH3)2, - CH(CH3)CH2- or -CH(CH3)CH(CH3)-, and it can also be methylene.
Aryl is phenyl or naphthyl, In particular phenyl.
Heteroaryl is a 5- to 7-membered aromatic ring with one to up to three hetero atoms selected from the group consisting of N, O and S. Preference is given to aromatic 5- and 6-membered rings which have a nitrogen atom as hetero atom and which can, If desired, also contain a further hetero atom, preferably nitrogen or sulfur, in particular nitrogen.
Substituted aryl and heteroaryl are preferably substituted with one to three substituents selected from the group consisting of halogen, NO2, CN, C1-C4aikyt, C1-C4alkoxy, halogen-C1-C4alkyl and halogenC1-C4alkoxy. Preferred are unsubstituted or mono substituted, especially unsubstituted aryl and heteroaryl.
Preferred starting materials for preparing the corresponding compounds of the formula I according to the invention are:
(1) a compound of the formula II where
X i6 N;
(2) a compound of the formula II where
Y is NO2;
(3) a compound of the formula II where
Z is CHR3 or NR3, preferably NR3;
(4) a compound of the formula II where
R? and R2 are together a two- or three-membered alkylene bridge with or without a hetero member selected from the group consisting of NR5,O and S;
(5) a compound of the formula II where
R3 is unsubstituted or R4-substltuted C1-C4alkyl, preferably unsubstituted C1-C4alkyI;
(6) a compound of the formula II where
R« is unsubstituted or substituted atyl or heteroaryl, the substituent being selected from the group consisting of halogen, NO2, CN, C1-C4alkyi, C3-C6cycloalkyl, C1-C4alkoxy and C1-C4alkylthlo,
preferably unsubstitued aryl;
(7) a compound of the formula II wherein
R6 is unsubstituted or Re-substituted C1-C4alky!, aryl, heteroaryl, SR7, (alkylen)SH or (alkylene)SRr,
preferably aryl, R8-substituted C1-C4alkyl or SR7,
in particular R8-substituted C1-C2alkyl or especially aryl;
(8) a compound of the formula II wherein
R7 is unsubstituted or R4-substituted alky I, aryl, heteroeryl or a group of the formula
(Formula Removed)
in which X, Y, Z, R1 and R2 are as defined for the Formula II, in particular a group of Formula III: (9) a compound of Formula II wherein
R5 is aryl or heteroaryl, which are either unsubstituted or substituted, the substituents being selected from the group consisting of halogen, NO2, CN, C1-C4-alkyl, C3-C6-cycloalkyl, C1-C4-alkoxy and C1-C4-alkylthio;
in particular unsubstituted aryl
The present invention relates to a process for preparing a compound of the formula
(Formula Removed)
in which
Y is NO2 or CN,
R3 is H or unsubstituted or R4-substituted C1-C8 alkyl, and
R4 is an unsubstituted or mono- to tri-substituted phenyl naphthyl or
heteroaryl group (heteroaryl being a 5- to 7-membered aromatic residue
with one and up to and including three ring heteroatoms selected from
the group consisting of N, O and S) the substituents of which are
selected from the group consisting of halogen, NO2, CN, C1-C4 alkyl, C1-
C4 alkoxy, halogen-C1-C4 alkyl and C1-C4 alkoxy;
which process comprises
a) reacting a compound of the formula
(Formula Removed)
in which Y, and R2 are as defined for the formula I,
n is 0, 1 or 2,
R8 is unsubstituted or R8-substituted C1-C8 alkyl, unsubstituted or
R8-substituted C2-C8 alkenyl, unsubstituted or R8-substituted C2-C8
alkynyl, C3-C6 cycloalkyl, an unsubstituted or mono- to tri-substituted
phenyl or naphthyl group (the substituents of which are selected from
the group consisting of halogen, NO2, CN, C1-C4 alkyl, C1-C4 alkoxy, halogen-C1-C4 alkyl and C1-C4 alkoxy), heteroaryl (heteroaryl being a 5-to 7-membered aromatic residue with one and up to and including three ring heteroatoms selected from the group consisting of N, O and S), SR?, (C1-C8 alkylene)SH or (C1-C8 alkylene)SR7, R7 is unsubstituted or R4-substituted C1-C8 alkyl, unsubstituted or R4-substituted C2-C8 alkenyl, unsubstituted or R4-substituted C2-C8 alkynyl, C3-C6 cycloalkyl, an unsubstituted or mono- to tri-substituted phenyl or naphthyl group (the substituents of which are selected from the group consisting of halogen, NO2, CN, C1-C4 alkyl, C1-C4 alkoxy, halogen-C1-C4 alkyl and C1-C4 alkoxy), heteroaryl (heteroaryl being a 5- to 7-membered aromatic residue with one and up to and including three ring heteroatoms selected from the group consisting of N, O and S) or a group of the formula
(Formula Removed)
in which Y and R3 are as defined for the formula II, and
R8 is an unsubstituted or mono- to tri-substituted phenyl, naphthyl or
heteroaryl (heteroaryl being a 5- to 7-membered aromatic residue with
one and up to and including three ring heteroatoms selected from the
group consisting of N, O and S) group (the substituents of which are
selected from the group consisting of halogen, NO2, CN, C1-C4 alkyl, C1-
C4 alkoxy, halogen-C1-C4 alkyl and C1-C4 alkoxy or heteroaryl group,
heteroaryl being a 5- to 7-membered aromatic residue with one and up to
and including three ring heteroatoms selected from the group consisting
of N, O and S), -COOH, -COOM, wherein M is an alkali metal, or -COO-
C1-C8-alkyl,
with a chlorinating agent or
bl) initially reacting a compound of the formula
(Formula Removed)
in free form or in salt form,
in which R6 and n are as defined for the formula II and X1 is a leaving
group, in the presence or absence of a base, with a compound of the
formula
(Formula Removed)
in which Y and R3 are as defined for the formula I, and
b2) further reacting the compound of the formula II obtainable thereby,
with or without intermediate isolation, with a chlorinating
Especially preferred according to the Invention are the compounds of the formula II mentioned In the Examples,
The reactions described hereinbefore and hereinafter are carried out In a customary manner, for example in the absence or usually In the presence of a suitable solvent or diluent or a mixture thereof, working as the occasion demands with cooling, at room temperature or with heating, for example at a temperature In the range of from about -800C to the boiling point of the reaction medium, preferably at about -200C to about +150°C, and, If necessary, In a closed vessel, at elevated pressure, in an Inert-gas atmosphere and/or under anhydrous conditions. Especially advantageous reaction conditions are discernible from the Examples.
The starting materials listed hereinbefore and hereinafter used for preparing the compounds I, as the case may be in their free form or as salts, are known or, If they are novel, can be prepared by known methods, for example according to the following specification:}.
Variant a)
Suitable halogenatlno agents ere for example elementall chlorine, Javello water, polysulfur dlchlorlde, sulfur dichloride, phosphorus trichloride, phosphorus pentachforide or mixtures of two or more than two of these compounds, preferably elemental chlorine, Javelle water, sulfur dlchlorlde or a mixture of these two compounds, particularly preferably elemental chlorine of Javelle water.
The reaction partners can be reacted with each other without the addition of a solvent or diluent. It may, however, be advantageous to add a solvent or a diluent or a mixture thereof, in which case the amount thereof is not critical. Examples of such solvents or diluents are: water; alcohols, such as methanol, ethanol, propanol, isopropanol, butanol, ethylene glycol or glycerol; aromatic, aliphatic and alicyclic hydrocarbons and halogenated hydrocarbons, such as benzene, toluene, xylene, mesitylene, tetrallne, chlorobenzene, dichlorobenzene, bromobenzene, petroleum ether, hexane, cyclohexane, dichloromelhane, trichloromethane, carbon tetrachloride, dichloroethane, trichloroethene or tetrachloroethene; ethers, such as diethyl ether, dipropyl ether, dilsopropyl ether, dlbutyl ether, tert-butyl methyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol dimethyl ether, dimethoxydiethyl ether, tetrahydrofuran or dioxane; amides, such as N,N-dlmethylformamide, N,N-diathylformamlde, N,N-dimethylacetamlde, N-methyl-pyrrolidone or hexamethylphosphorlc triamide; nltriles, such as acetonitrile or propionitrile; and sulphoxidss, such as dimethyl sulphoxide. The reaction Is preferably carried cut tn the presence of a halogenated hydrocarbon, in particular dichloromethane or chlorobonzene.
The reaction Is advantageously carried out at a temperature in the range of from about -20°C to about +180°C, preferably from about 00C to about -180°C, in many Instances in the range between room temperature and the reflux temperature of the reaction mixture.
In a preferred embodiment of variant a), a compound II is reacted at -10°C to 40°C, preferably 0°C, with a chlorinating agent, preferably Javelle water.
The reaction Is preferably carried out at atmospheric pressure.
The reaction time is not critical; preference Is given to a reaction time of 0.1 to 4I3 hours, in particular 0.5 to 24 hours.
The product Is isolated by customary methods, for example filtration, crystallization, distillation or chromatography or any suitable combination of these procedures.
The yields obtained are generally good. Variant b1)
Suitable leaving groups X1 in the compounds IV are for example hydroxy, C1-C8 alkoxy, halo-C1-C8alkoxy, C1-C8alkanoyloxy, mercapto, C1-C8 alkyl1hio, halo-C1-C8alkylthio, C1-Calkanesulfonyloxy, halo-C1-C8alkanesulfony!oxy, benzenesulfonyloxy,
toluenesulfonyloxy and halogen, preferably toluenesulfonyloxy, tri-fluoromethanesulfonyloxy and halogen, in particular halogen.
Bases suitable for facilitating the reaction are for example alkali metal or alkaline earth metal hydroxides, hydrides, amides, alkanolates, acetates, carbonates, dialkylamides or alkylsilylamides, alkylamines, alkylenediamines, free or N-alkylated, saturated or unsaturated cycloalkylamines, basic heterocycles, ammonium hydroxides and also carbocyclic amines. Examples are sodium hydroxide, sodium hydride, sodium amide, sodium methanolate, sodium acetate, sodium carbonate, potassium tert-butanolate, potassium hydroxide, potassium carbonate, potassium hydride, lithium diisopropylamide, potassium bis(trimethylsilyl)amide, calciumhydride, triethylamine, diisopropylethylamine, triethylenediamine, cyclohexylamine, N-cyclohexyl-N.N-dimethylamine, N,N-diethylaniline, pyridine, 4-(N,N-dimethylamino)pyridine, quinuclidine, N-methylmorpholine, benzyltrimethyl-ammonium hydroxide and also 1,5-diazabicyclo[5.4.0]undec-5-ene (DBU).
The reaction partners can be reacted with each other as such, i.e. without the addition of a solvent or diluent, for example in the melt. In most instances, however, the addition of a solvent or diluent or a mixture thereof is advantageous. Examples of such solvents or diluents are: water; aromatic, aliphatic and alicyclic hydrocarbons and halogenated hydrocarbons, such as benzene, toluene, xylene, mesitylene, tetraline, chlorobenzene, dichlorobenzene, bromobenzene, petroleum ether, hexane, cyclohexane, dichloromethane, trichloromethane, carbon tetrachloride, dichloroethane, trichloroethene or tetrachloroethene; esters, such as ethyl acetate; ethers, such as diethyl ether, dipropyl ether, diisopropyl ether, dibutyl ether, tert-butyl methyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol dimethyl ether, dimethoxydiethyl ether, tetrahydrofuran or dioxane; ketones, such as acetone, methyl ethyl ketone or methyl isobutyl ketone; alcohols, such as methanol, ethanol, propanol, isopropanol, butanol, ethylene glycol or glycerol; amides, such as N,N-dimethylformamide, N,N-diethylformamide, N,N-dimethylacetamide, N-methylpyrrolidone or hexamethylphosphoric triamide; nitrites, such as acetonitrile or propionitrile; and sulphoxides, such as dimethyl sulphoxide. If the reaction is carried out in the presence of a base then bases such as triethylamine, pyridine, N-methylmorpholine or N.N-diethylaniline employed in excess may also serve as solvents or diluents.
The reaction can also be carried out in a heterogeneous two-phase mixture, for example a mixture of an organic solvent and an aqueous solution of a base, if necessary in the presence of a phase-transfer catalyst such as a crown ether or a tetraalkylammonium salt.
The reaction is advantageously carried out at a temperature In the range of from about 0°C to about -f 180'C, preferably from about +10°C to about +80°C, in many instances in the range between room temperature and the reflux temperature of the reaction mixture.
In a preferred embodiment of variant b1), a compound IV is reacted at O0C to 1200C, preferably 200C to 80°C, In particular 60'C to 80°C, in an amide, preferably N,N-dimethylformamlde, with a compound V,
The reaction is preferably carried out at atmospheric pressure.
The reaction time is not critical; preference is given to a reaction time of 0.1 to 48 hours, in particular 0.5 to 24 hours.
The product is isolated by customary methods, for example filtration, crystallization, distillation or chromatography or any suitable combination of these procedures.
The yields obtained are generally good.
Variant b2)
Suitable halogenating agents are for example of the kind stated under variant a).
The reaction partners can be reacted with each other as such, I.e. without the addition of a solvent or diluent, for example in the melt. In most instances, however, the addition of a solvent or diluent or a mixture thereof Is advantageous. Suitable solvents or diluents are for example of the kind stated under variant a).
The reaction is advantageously carried out at a temperature in the range of from about -20°C to about + 180°C, preferably from about 00C to about +8000, in many instances between room temperature and the reflux temperature of the reaction mixture.
In a preferred embodiment of variant b2), a compound II is reacted with a chlorinating agent, preferably elemental chlorine or Javelle water, at 100C to 40°C, preferably 00C.
The reaction is preferably carried out at atmospheric pressure.
The reaction time is not critical; preference is given to a reaction time of 0.1 to 48 hours, in particular O.S to 24 hours.
The product Is Isolated by customary methods, for example filtration, crystallization, distillation or chromatography or any suitable combination of these procedures.
The yields obtained are generally good.
Novel starting materials or intermediates, In each case either In their free form or as salts, that are used according to the Invention for preparing compounds of the formulae I, II, IV or VII or their salts, respectively, a process for their preparation and their use as starting materials or intermediates for preparing the compounds I, II, IV or VII also form part of the subject-matter of the Invention.
The compounds II can be prepared for example as described under variant b1).
Compounds of the formula IV can be prepared for example by reacting a compound of the formula
(Formula Removed)
which Is known, with a compound of the formula R6X2 in which Re has the meanings stated for the formula II and X2 is a leaving group, and subsequently reacting with a compound of the formula QX, in which Q is an acidic group, for example a preferably inorganic acid function such as in particular SO2X1, and X1 has the rneanings stated for the formula IV, to give compounds of the formula IV in which n is 0 which can, if desired, be converted further to compounds of the formula IV in which n is 1 or 2 by using an oxidizing agent such as in particular hydrogen peroxide.
The compounds of the formula IV can for instance - also be obtained by reacting a compound of the formula
(Formula Removed)
wherein R6 has the meanings given for formula II, with a compound of the formula QX1, wherein Q Is an acidic group, preferably an inorganic acidic group, such as SO2X,, and X, has the meanings given for formula II, in order to obtain a compound of the formula IV, wherein n 0 1st, and - if desired - further reacting the compound of the formula IV, wherein n Is 0, with an oxidizing agent, such as hydrogen peroxld, in order to obtain a compound of the formula IV, wherein n is 1 or 2.
The compounds of the formula VII can for Instance be obtained by reacting a compound of the formula VI with a compound of the formula R0X2, wherein RO has the meaning as given for formula II and X2 is a leaving group, preferably in the presence of a base.
The Invention relates to all those embodiments of the process which are based on starting materials or Intermediates obtainable 1 from any stage of the process and in which all or some of the missing steps are carried out or in which a starting material is used or, in particular, formed under the reaction conditions in the form of a derivative or salt and/or its racemates or enantiomers.
The invention relates In particular to the processes described in Examples H1 to H8.
The Examples that follow more particularly describe the invention. They do not limit the invention. Temperatures are stated In degrees centigrade. Percentages represent percent by weight", unless indicated otherwise.
Example HI: 2-Benzylthio-5-chloromel:hyl-thiazole (Compound No. 1.9 In Table 1)
3.2 g of 2-benzylthio-5~methylene-4H-l:hlazoline are dissolved in 50 ml of dichloromethane, and 0.9 g of pulverulent sodium bicarbonate are added with stirring. The mixture is subsequently cooled in an ice bath, 1 .92 g of sulfuryl chloride in 5 ml of dichloromethane are added drop wise, and stirring is then continued for a further 45 minutes. The reaction mixture is filtered, the filtrate is evaporated, and the residue is recrystallizod from petroleum ether, yielding 1 .4 g of the title compound in the form of crystals melting at 57 to 58°.
Example H2: 3-(2-Benzylmiothlazol-5-ylmethyl)-5-methyl--nltrolmlno-pehiydro-1,3,5-oxadlazlne (Compound No. 2.9 in Table 2)
0.8 g of 2-benzylthlo-5-chloromethyUthlazole, 0.35 g of 3 methyl-4 nitrolmlno-perhydro-1 ,3,5-oxadiazine and 0.8 g of pulverulent potassium carbonate are mixed in 40 ml of N,N-dimethylformamide, and the mixture Is stirred at 60° for 2 hours. The reaction mixture is filtered, the filtrate is evaporated under reduced pressure, and the residue is digested in diethyl ether/isopropanol (5:1), yielding 0.6 g of the title compound in the form of crystals melting at 140 to 145° (decomposition).
Example H3: 3-(2-Chlorothiazol~5-vlmethvn-5-methyl-4~nitroimino-perhydro-1,3,5-oxadlazine (Compound No. 11.1 in Table 11)
2 g of 3-(2'benzylthiothiazol-5-ylmethyl)-5-methyl-4-nltroimino-perhydro-1,3,5-oxadiazine are dissolved In a mixture of 10 ml of 4N aqueous hydrochloric acid, 20 g of ice and 30 ml of dichloromethane, and 30 g of Javelle water are added dropwlse with stirring to the solution. After stirring for a further 30 minutes, the organic phase Is separated off, the aqueous phase is extracted repeatedly with a little dichloromethane, and the combined organic phases are subsequently dried with sodium sulphate and evaporated under reduced pressure. The oily residue is dissolved in tetrahydrofuran and precipitated with hexane, whereby the product deposits on the walls of the vessel as a sticky material. The solvent Is decanted, the residue Is redlssolved In tetrahydrofuran, and the solution is slowly concentrated, yielding 0.84 g of the title compound in the form of a semi-crystalline resin. A sample of this resin is purified by chromatography [silica gel; dichloromethane/methanol (95:5)), yielding crystals melting at 132 to 1350.
Example H4: 3-(2-Chlorothiazol-5-ylmethyl)-5-methyl-4-nitroimino-perhydro-1.3.5-oxadlazlne (Compound No. 11.1 In Table 11)
To a mixture of 300 g of aqueous hydrochloric acid (32%) and 150 g of chlorobenzene are added with stirring 183 g of 5-mothyl-4-nltroimino-3-(2-phenylthlothlazol-5-ylmethyl)-perhydro-1,3,5-oxadiazine within 5 minutes. 124 g of chlorine are then passed into the mixture at 20 to 25° over a period of 4 hours. After stirring for a further 2 hours, the excess of chlorine is removed by introduction of nitrogen, and the aqueous phase (containing the title compound in hydrochloride form) is separated off and adjusted to pH 5 with aqueous sodium hydroxide solution (30%). The crystalline precipitate is filtered off, washed with water and dried at 50* in vacuo, yielding 132 g of the title compound (purity: 97%) melting at 132 to 135°.
Example H5:3-(2-Chlorothlazol'-5'ylmethyl)-5-methyl-4-nitrolmino-perhydro- 1,3,5-oxadlazine (Compound No. 11.1 in Table 11)
To a mixture of 300 g of aqueous hydrochloric acid (32%) and 150 g of chlorobenzene are added with stirring 186 g of 3-(2-cyclohexylthiothlazol-5-ylmethyl)-5-methyl-4-nitrolmino-perhydro-1,3,5-oxadiazine within 5 minutes. 124 g of chlorine are then passed Into the mixture at 20 to 25° over a period of 4 hours. After stirring for a further 2 hours, the excess of chlorine is removed by Introduction of nitrogen, and the aqueous phase (containing the
title compound in hydrochloride form) is separated off and adjusted to pH 5 with aqueous sodium hydroxide solution (30%). The crystalline precipitate la filtered off, washed with water and dried at 50° in vacuo, yielding 135 g of the title compound (purity: 97%) melting at 132 to 135°.
Example H6:3-(2-Chlorothiazol-5-ylmethyh'5-methyl-4-nitrolmino-perhydro-1,3,5-oxadlazlne (Compound No. 11.1 in Table 11)
To a mixture of 300 g of aqueous hydrochloric acid (32%) and 150 g of chlorobenzene are added with stirring 190 g of 3-(2-benzylthiothlazol-5-ylmethyl)-5-methyl-4-nllroimlno-perhydro-1,3,5-oxadlazine within 5 minutes. 124 g of chlorine are then passed into the mixture at 20 to 25° over a period of 4 hours. After stirring for a further 2 hours, the excess of chlorine is removed by introduction ol nitrogen, and the aqueous phase (containing the title compound in hydrochloride form) is separated off and adjusted to pH 5 with aqueous sodium hydroxide solution (30%), The crystalline precipitate is filtered off, washed with water and dried at 50" in vacuo, yielding 120 g of the title compound (purity: 97%) melting at 132 to 135°,
Example H7:2-BenzylthiO'5-methylene-4H-thiazoline (Compound No. 1.8 in Table 1a)
A mixture of 6.5 g of 5-methylene-2-thloxo-thiazo!idine, 17.3 g of pulverulent potassium carbonate, 9.4 g of benzyl bromide and 200 ml of acetonltrlle Is stirred for 1 hour at 630. The mixture is allowed to cool to room temperature and is then filtered, and the filtrate Is evaporated to dryness in vacuo. The residue Is purified by chromatography [silica gel; hoxane/di-ethyl ether {1 ;1)], yielding 7.7 g of the title compound In the form of a colourless oil.
Example H8: Analogously to the procedures described in Examples 111 to H7, also the other compounds listed in Tables 1 to 13 can be prepared. The temperatures stated in the column "Physical data" of these tables in each case denote the melting point of the respective compound; "decomp." means decomposition.
Table 1
(Table Removed)

Table 1a
(Table Removed)

Table 2
(Table Removed)

Table 3
(Table Removed)

Table 4
(Table Removed)

Table 5
(Table Removed)

Table 6
(Table Removed)

Table 7
(Table Removed)

Table 8
(Table Removed)

Table 9
(Table Removed)

Table 10
(Table Removed)

Table 11
(Table Removed)

Table 12
(Table Removed)






We claim:
1. A compound of the formula(Formula Removed) wherein Y is NO2 or CN, and R3 is H or unsubstituted or R4-substituted C1-C8 alkyl, n is 0, 1 or 2,
R4 is an unsubstituted or mono- to tri-substituted phenyl naphthyl or heteroaryl group (heteroaryl being a 5- to 7-membered aromatic residue with one and up to and including three ring heteroatoms selected from the group consisting of N, O and S) the substituents of which are selected from the group consisting of halogen, NO2, CN, C1-C4 alkyl, C1-C4 alkoxy, halogen-C1-C4 alkyl and C1-C4 alkoxy; R6 is unsubstituted or R8-substituted C1-C8 alkyl, unsubstituted or R8-substituted C2-C8 alkenyl, unsubstituted or R8-substituted C2-C8 alkynyl, C3-C6 cycloalkyl, an unsubstituted or mono- to tri-substituted phenyl or naphthyl group (the substituents of which are selected from the group consisting of halogen, NO2, CN, C1-C4 alkyl, C1-C4 alkoxy, halogen-C1-C4 alkyl and C1-C4 alkoxy), heteroaryl (heteroaryl being a 5-to 7-membered aromatic residue with one and up to and including three ring heteroatoms selected from the group consisting of N, O and S), SR7, (C1-C8 alkylene)SH or (C1-C8 alkylene)SR7, R7 is unsubstituted or R4-substituted C1-C8 alkyl, unsubstituted or R4-substituted C2-C8 alkenyl, unsubstituted or R4-substituted C2-C8 alkynyl, C3-C6 cycloalkyl, an unsubstituted or mono- to tri-substituted phenyl or naphthyl group (the substituents of which are selected from the group consisting of halogen,
NO2) CN, C1-C4 alkyl, C1-C4 alkoxy, halogen-C1-C4 alkyl and C1-C4 alkoxy), heteroaryl (heteroaryl being a 5- to 7-membered aromatic residue with one and up to and including three ring heteroatoms selected from the group consisting of N, O and S).
2. A compound as claimed in claim 1, wherein Y is NO2, R3 is C1-2
alkyl, n is 0 and R6 is unsubstituted phenyl.
3. A compound as claimed in claim 2, wherein Y is NO2, R3 is methyl,
n is 0 and R6 is unsubstituted phenyl.

Documents:

2663-del-1996-abstract.pdf

2663-del-1996-assignment.pdf

2663-del-1996-claims.pdf

2663-del-1996-correspondence-others.pdf

2663-del-1996-correspondence-po.pdf

2663-del-1996-description (complete).pdf

2663-del-1996-form-1.pdf

2663-del-1996-form-10.pdf

2663-del-1996-form-13.pdf

2663-del-1996-form-18.pdf

2663-del-1996-form-2.pdf

2663-del-1996-form-3.pdf

2663-del-1996-form-4.pdf

2663-del-1996-form-6.pdf

2663-del-1996-gpa.pdf

2663-del-1996-petition-137.pdf

2663-del-1996-petition-138.pdf


Patent Number 213003
Indian Patent Application Number 2663/DEL/1996
PG Journal Number 04/2008
Publication Date 25-Jan-2008
Grant Date 19-Dec-2007
Date of Filing 02-Dec-1996
Name of Patentee SYNGENTA PARTICIPATIONS AG
Applicant Address SCHWARZWALDALLEE 215, CH-4058 BASEL, SWITZERLAND.
Inventors:
# Inventor's Name Inventor's Address
1 NOVARTIS AG SCHWARZWALDALLEE 215, CH-4058 BASEL, SWITZERLAND.
PCT International Classification Number C07D 277/32
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 3412/95 1995-12-01 Switzerland