Title of Invention

"A PROCESS FOR PREPARING AN α-(ALKYLCYCLOHEXYLOXY)-ß-ALKANOL"

Abstract A process for preparing an α - (alkylcyclohexyloxy) alkanol of formula (1) wherein at least one of R1, R2, R3, R4 and R5 is the group wherein R9 and R10 are the same or different alkyl groups having 1 to 4 carbon atoms or are coupled with each other to form a cycloalkyl group of the kind such as herein described, and R11 is a hydrogen atom or an alkyl group having 1 to 4 carbons or is a hydrogen atom when R9 and R10 form the cycloalkyl group, and the remaining R1, R2, R3, R4 and R5 groups are hydrogen atoms or methyl groups, and wherein R6, R7 and R8 are hydrogen atoms or the same or different alkyl groups having 1 to 6 carbon atoms, which comprises the steps of reacting an alklcyclohexanol of formula (2): Wherein R1, R2, R3, R4 and R5 have the same meanings as defined before, with a strong base of the kind such as herein described at a temperature of from 30 to 120°C; and then reacting the product obtained with an epoxide of formula (3); wherein R6, R7 and R8 have the same meanings as defined above at a temperature of from 30 to 120°C.
Full Text BACKGROUND OF THE INVENTION Field of the Invention:
The present invention relates to a novel fragrance-imparting compound and more particularly to a compound with a woody or amber odor, having an excellent residual odor property, and a perfume composition containing the same.
Description of the Background:
Perfumes having a residual odor property among perfumes having a woody or amber odor are used as a base note in compounding perfumes and are important materials for determining odors as a frame of compound perfumes. However, most of these compounds including natural materials are fairly expensive, which places a large restriction on the use of the materials in inexpensive compound perfumes. Hence, it is quite important to develop inexpensive materials having a woody or amber fragrance and a residual odor property.
It has been reported that ortho- and paraalkylcyclo--hexanols, ortho- and paraalkylcyclohexanones, ortho- and paraalkylcyclohexyl acetates, and the like, which are derived from alkylphenols and are represented by the following formulas,

(Formula Removed)
wherein R is a hydrogen atom or a methyl group, possess a woody odor. The compounds have been widely used as inexpensive materials, as disclosed in "Perfume and Flavor Chemicals", S. Arctander, Elizabeth (1969).

SUMMARY OF THE INVENTION
Accordingly, one object of the present invention is to provide a compound having a woody or amber odor and an excellent residual odor property.
Another object of the present invention is to provide a perfume composition containing a compound having a woody or amber odor and an excellent odor property.
Briefly, these objects and other objects of the present invention as hereinafter will become more readily apparent can be attained by an α- (alkylcyclohexyloxy) -ß-alkanol of the formula (1)

(Formula Removed)
wherein at least one of R1, R2, R3, R4 and R5 is the group

(Formula Removed)
wherein R9 and R10 are either the same or different
alkyl groups having 1 to 4 carbon atoms or are coupled with
each other to form a cycloalkyl group, and R11 is a hydrogen
atom or an alkyl group having 1 to 4 carbons or is a hydrogen
atom when R9 and R10 form the cycloalkyl group, and the
• remaining R1, R2, R3, R4 and R5 groups are hydrogen atoms or
methyl groups, and wherein R6, R7 and R8 are hydrogen atoms or
either the same or different alkyl groups having 1 to 6 carbon
atoms. '
In accordance with another aspect of the present invention, a perfume composition is provided which contains an α- (alkylcyclohexyloxy) -ß-alkanol described above.

Accordingly the' present invention relates to:
A process for preparing an α - (alkylcyclohexyloxy) alkahol represented by formula (1):

(Formula Removed)
wherein at least one of R1, R2, R3, R4 and R5 is the group
(Formula Removed)

wherein R9 and R10 are the same or different alkyl groups having 1 to 4 carbon atoms or are coupled with each other to form a cycloalkyl
, , j
group of the kind such as herein described, and R11 is a hydrogen atom or an alkyl group having 1 to 4 carbons or is a hydrogen atom when R9 and R10 form the cycloalkyl group, and the remaining R1, R2, R3, R4 and R5 groups are hydrogen atoms or methyl groups, and wherein R6, R7 and R8 are hydrogen atoms or the same or different alkyl groups having 1 to 6 carbon atoms, which comprises the steps of reacting an alklcyclohexanol of formula. (2):
(Formula Removed)
Wherein R1, R2, R3, R4 and R5 have the same-meanings as defined before, with a strong base of the kind such as herein described at a temperature of from 30 to 120°C; and then

reacting the product obtained with an epoxide of formula (3);
(Formula Removed)
wherein R6, R7 and R8 have the same meanings as denned above at a temperature of from 30 to 120ºC.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The inventors have directed research effort and investigation into compounds which exhibit a woody or amber odor, which have an excellent residual odor property and which can be prepared at a low price. It has been found that cyclohexanes obtained by the hydrogenation of epoxide addition products of alkylcyclohexanols or alkylphenols satisfy such requirements. In formula (1) above, methyl, ethyl, n-propyl, iso-propyl, n-butyl, iso-butyl, tert-butyl, n-pentyl, n-hexyl and the like are examples of alkyl groups for R6, R7 and R8.
In these groups the alkyl groups having 1 to 4 carbon atoms in particular are preferred.
The present compounds of formula (1) can be prepared, for example, by any of the following reaction schemes.
(A) In the following scheme, alkylcyclohexanol (2) is treated in the presence of a strong base to make an alcoholate, and then the alcoholate is reacted with an epoxide (3) to prepare the product compound of formula (1).

(Formula Removed)
In the formulas, R1 to R8 are as defined above.
Solvents which are useful in the reaction include ether solvents such as diethyl ether, dibutyl ether, tetrahydrofuran and the like, and hydrocarbon solvents such as hexane, benzene, toluene, xylene and the like. Suitable strong bases which can be used include alkali metal hydrides such as sodium hydride, lithium hydride, potassium hydride and the like; alkali metal amides such as sodium amide, lithium amide,

potassium amide and the like; alkali metals such as sodium, lithium, potassium and the like; and metal alkyl compounds such as alkyl lithium, alkyl magnesium halide and the like. The amount of the strong base used in the above reaction ranges from 0.1 to 2.0 equivalent per equivalent of alkylcyclohexanol (2), and a 1.0 to 1.2 equivalent amount is preferred in particular. The preferred amount of the epoxide (3) used in the above reaction is in a range of a 1.0 to 5.0 equivalent per equivalent of alkylcyclohexanol (2), and a 1.0 to 1.2 equivalent amount in particular is preferred. Both the alcoholate forming reaction and the epoxide addition reaction are carried out at a temperature of 30 to 120°C, preferably at 50 to 100°C.
In this case, when alkylcyclohexanol (2), as a raw material, is a mixture of cis-trans isomers, the compound (1) obtained is also a mixture of cis-trans isomers. The mixture of the isomers may be separated by, for example, column chromatography or the like, or can it be used as it is.
(B) In another embodiment, alkylphenol (4) is reacted with the epoxide (3) in the presence of a base catalyst to form α - (alkylphenyleneoxy) -ß-alkanol (5), and the obtained compound (5) is hydrogenated in the presence of a metal catalyst to prepare present compound (1).

(Formula Removed)



In the formulas, R1 to R8 are as defined above. Suitable solvents which can be used in the above-described epoxide addition reaction include alcohol solvents such as methanol, ethanol, n-propanol, isopropanol and the like; ether solvents such as diethyl ether, dibutyl ether, tetrahydrofuran and the like; and hydrocarbon solvents such as hexane, benzene, toluene, xylene and the like. The reaction however, can also be carried out without using any solvent. Suitable examples of the base catalyst include alkali metal hydroxides such as sodium hydroxide, lithium hydroxide, potassium hydroxide and the like, and alkali metal carbonates such as sodium carbonate, lithium carbonate, potassium carbonate and the like. The bases can be used in

powder form or as a solution containing the same. The amount of the base catalyst-used in the above reaction is 0.01 to 2.0 equivalent per equivalent of alkylphenol (4), and 0.05 to 0.5 equivalent is preferred in particular. The amount of the epoxide (3) normally used in the above reaction is in a range of 1.0 to 5.0 equivalent per equivalent of alkylphenol (4), and 1.0 to 1.2 equivalent amount in particular is preferred. The epoxide addition reaction is carried out at a temperature of 30 to 200°C, preferably at 50 to 150°C.
Suitable solvents which can be used in the above-described hydrogenation reaction of the compound (5) include alcohol solvents such as methanol, ethanol, n-propanol, isopropanol and the like, and hydrocarbon solvents such as hexane, heptane, cyclohexane, methylcyclohexane and the like. However, the reaction can also be carried out without using any solvent. Suitable examples of the metal catalyst include palladium catalysts, ruthenium catalysts, rhodium catalysts, platinum catalysts, nickel catalysts and the like. The metal catalyst is used in the reaction in an amount ranging from 0.01 to 10% by weight relative to compound (5), and the range of 0.05 to 5% by weight is preferred. The hydrogenation reaction is carried out at a temperature of 50 to 300°C, preferably at 100 to 250°C. The pressure of the hydrogen in this reaction is a range of 1 to 150 atms, preferably a range of 10 to 100 atms.

Compound (1) in the form of a mixture of cis-trans isomers is formed by the hydrogenation of compound (5). The mixture of the isomers may be separated by, for example, column chromatography or the like, or it can be used as it is.
Embodiments of the present compound (1) include those having the following structure:
(Formula Removed)
The odors of these compounds of the present invention are tabulated as follows.

(Table Removed)
** Compound is applied to odor paper and the number of days the odor persists is measured.
As described above, the present compounds of formula (1) can be produced by using inexpensive materials and the present

compounds having a woody or amber odor possess an excellent residual odor property. Hence, by blending the present compound (1) , as a base note, with other odorants, an excellent perfume composition can be obtained. The amount of the present compound (1), blended into the likes of perfume compositions, varies depending on other compounded perfume ingredients, destination odors, and the like and is not limited provided that a woody or amber fragrance can be imparted. Further, the perfume compositions of the present invention can be widely used as a fragrance imparting component for perfumes, soaps, shampoos, rinses, detergents, cosmetics, fragrance imparting agents, and so forth either independently or in combination with other perfume compositions.
Having now generally described this invention, a further understanding can be obtained by reference to certain specific examples which are provided herein for purposes of illustration only and are not intended to be limiting unless otherwise specified.
EXAMPLES
Example 1:
Synthesis of 1-(2-tert-butylcyclohexyloxy)-2-propanol:
[Compounds (1) and (2)]
To a 300 ml round bottom flask provided with a Dimroth condenser and a dropping funnel, 7.5 g (0.194 mol) of sodium

hydride (62 weight % mineral oil dispersion type) and 30 ml of tetrahydrofuran were added and heated at 60°C under a nitrogen gas flow. Then, to this solution a mixture of 30.0 g (0.192 mol) of 2-tert-butylcyclohexanol (cis:trans=8:2) and 30 ml of tetrahydrofuran was added dropwise in approximately 30 minutes, and the mixed solution was stirred under reflux for 24 hours until the generation of hydrogen gas had stopped. The reacted mixed solution was cooled to 40°C, and after dropwise adding 11.1 g (0.192 mol) of propyleneoxide to the mixed solution, the solution was further stirred under reflux for 48 hours. The mixed solution was neutralized by 3 N hydrochloric acid, and the organic layer was separated from the water layer. Distillation was then conducted and 9.9 g of 2-tert-butylcyclohexanol and 24.2 g of l-(2-tert-butylcyclohexyloxy) -2-propanol (cis:trans=8:2) (bp. 112 to 113°C/5 mm Hg) were obtained in a 59% yield. Further, the cis-trans isomers of 1-(2-tert-butylcyclohexyloxy)-2-propanol were separated from each other by column chromatography using a developing solvent composed of Kieselgel 60 (trademark) of Merck Corporation and hexane : ethyl acetate =95 : 5.
1-(cis-2-tert-butylcyclohexyloxy)-2-propanol:
[Compound (1)]
IR (film, cm'1): 905, 966, 1089, 1146, 1195, 1368,
2866, 2938, 3406

NMR (60MHz, CDC13/ ppm): 0.95 (s, 9H), 1.16 (d,'J=7Hz,
3H) , 1.2-2.0 (m, 8H), 2.1-2.5(m, 2H), 2.8-3.6 (m, 2H), 3.6-4.2 (m, 2H)
GC-MS(M+): 214
l-(trans-2-tert-butylcyclohexyloxy)-2-propanol:
[Compound (2)]
IR (film, cm"1): 975, 1095, 1371, 1452, 2866, 2932,
3206
NMR (60MHz, CDC13, ppm): 0.98 (s, 9H), 1.15 (d, J=7Hz,
3H), 1.1-2.4 (m, 10H), 2.9-4.2 (m, 4H)
GC-MS(M+): 214
Example 2:
Synthesis of 1-(2-tert-butylcyclohexyloxy)-2-butanol:
[Compounds (3) and (4)]
The synthesis was carried out in the same manner as described in Example 1, except that 13.8 g (0.192 mol) of 1,2-butyleneoxide was used instead of 11.1 g (0.192 mol) of propyleneoxide, to obtain 12.3 g of 2-tert-butylcyclohexanol and 24.1 g of 1-(2-tert-butylcyclohexyloxy)-2-butanol (cis:trans=8:2) (bp. 122 to 123°C/5 mm Hg) in a 55% yield. Then, the cis-trans isomers of 1-(2-tert-butylcyclohexyloxy)-2-butanol were separated from each other in the same manner as described in Example 1.
l-(cis-2-tert-butylcyclohexyloxy)-2-butanol:
[Compound (3)]
IR (film, cm-1): 890, 960, 1089, 1180, 1365, 1464,
2855, 2932, 3424 NMR (60MHz, CDC13, ppm): 0.93 (s, 9H), 0.97 (t, J=7Hz,
3H), 1.0-2.0 (m, 10H), 2.0-2.4 (m, 2H), 3.0-3.9 (m, 4H) GC-MS(M+): 228
1-(trans-2-tert-butylcyclohexyloxy)-2-butanol: [Compound (4)] IR (film, cm"1): 972, 1095, 1368, 1452, 2866, 2932,
3448 NMR (60 MHz, CDC13, ppm): 0.93 (s and t, J=7Hz, 9H and
3H), 1.0-1.9 (m, 10H), 2.0-2.4 m, 2H),
3.0-3.8 (m, 4H) GC-MS(M+): 228
Example 3;
Synthesis of 1-(2-tert-butylcyclohexyloxy)-2-butanol:
[Compounds (3) and (4)]
(a) To a 300 ml round bottom flask provided with a Dimroth condenser and a dropping funnel, 35 g of 48 weight % sodium hydroxide solution and 350 g (2.33 mol) of 2-tert-butylphenol were added and heated at 80°C under a nitrogen gas flow atmosphere. Then, to this solution 176 g (2.45 mol) of 1,2-butyleneoxide was added dropwise in approximately 2 hours, and the mixed solution was stirred at 80°C for 5 hours. After

cooling the reacted mixed solution, the lower sodium hydroxide solution layer was separated from the organic layer. Distillation was then conducted and 497 g of
l-(2-tert-butylphenyloxy)-2-butanol (bp. 130°C/4 mm Hg) were obtained in a 96% yield.
l-(2-tert-butylphenyloxy)-2-butanol: [Compound (5a)]
IR (film, cm-1): 744, 975, 1038, 1092, 1134, 1233,
1290, 1362, 1392, 1443, 1491, 1599, 2956, 3058, 3412
NMR (60 MHz, CDC13, ppm): 1.07 (t, J=7Hz, 3H), 1.40 (s,
9H) , 1.5-1.8 (m, 2H), 2.15 (a, J=4Hz, 1H) , 3.8-4.1 (m, 3H), 6.8-7.4 (m, 4H) GC-MS(M+): 222
(b) To a 500 ml autoclave, 50 g (0.23 mol) of l-(2-tert-butylphenyloxy)-2-butanol, 150 g of isopropanol and 1.0 g of 5 weight % palladium catalyst supported on active carbon containing 50 weight % water (produced by N. E. Chemcat Co.) were added, and the mixture obtained was reacted at 190°C at a hydrogen pressure of 70 kg/cm2 for 27 hours until absorption of hydrogen had stopped. After the reaction was finished, the catalyst was filtered to remove it, and the reacted solution was distilled and 38.8 g of 1-(2-tert-butylcyclohexyl-oxy)-2-butanol (cis:trans=63:37) were obtained in a 74% yield of product.


Example 4;
Synthesis of l-(2-tert-butylcyclohexyloxy)-2-hexanol: [Compounds (5) and (6)]
The synthesis was carried out in the same manner as described in Example 1, except that 19.2 g (0.192 mol) of 1,2-hexeneoxide was used instead of 11.1 g (0.192 mol) of propyleneoxide, 12.9 g of 2-tert-butylcyclohexanol and 26.5 g of l-(2-tert-butylcyclohexyloxy)-2-hexanol (cis:trans=8:2) (bp. 116 to 117°C/1 mm Hg) were obtained in a 54% yield. Then, the- cis-trans isomers of
l-(2-tert-butylcyclohexyloxy)-2-hexanol were separated from each other in the same manner as described in Example 1. 1-(cis-2-tert-butylcyclohexyloxy)-2-hexanol: [Compound (5)] IR (film, cm-1): 890, 960, 1089, 1176, 1365, 1464,
2860, 2932, 3430 NMR (60 MHz, CDC13, ppm): 0.93 (br.s, 12H) , 1.1-2.5 (m,
16H) , 2.9-3.6 (m, 2H) , 3.6-4.0 (m, 2H) GC-MS(M+): 256
l-(trans-2-tert-butylcyclohexyloxy)-2-hexanol: [Compound (6)] IR (film, cm'1): 970, 1098, 1368, 1452, 2866, 2932,
3466
NMR (60 MHz, CDC13, ppm): 0.97 (br.s, 12H) , 1.1-2.5 (m,
16H), 1.0-1.9 (m, 10H), 2.9-3.6 (m, 2H), 3.6-4.0 (m, 2H)

GC-MS(M+) : 256
Example 5:
Synthesis of l-(4-tert-butylcyclohexyloxy)-2-butanol:
[Compounds (7) and (8)]
The synthesis was carried out in the same manner as described in Example 1, except that 30.0 g (0.192 mol) of 4-tert-butylcyclohexanol (cis:trans=8:2) and 13.8 g (0.192 mol) of 1,2-butyleneoxide were used instead of 30.0 g (0.192 mol) of 2-tert-butylcyclohexanol (cis:trans=8:2) and 11.1 g (0.192 mol) of propyleneoxide. 9.6 g of 4-tert-butylcyclo¬hexanol and 17.9 g of 1-(4-tert-butylcyclohexyloxy)-2-butanol (cis:trans=8:2) (bp. 130 to 133°C/5 mm Hg) were obtained in a 41% yield. Then, the cis-trans isomers of
1-(4-tert-butylcyclohexyloxy)-2-butanol were separated from each other in the same manner as described in Example 1.
1-(cis-4-tert-butylcyclohexyloxy)-2-butanol:
[Compound (7)]
IR (film, cm'1): 1032, 1092, 1116, 1182, 1368, 1470,
2872, 2944, 3470
NMR (60MHz, CDC13, ppm) : 0.87 (s, 9H) , 0.97 (t, J=7Hz,
3H) , 1.0-1.8 (m, 8H) , 1.8-2.4 (M, 4H) , 3.2-3.9 (m, 4H)
GC-MS(M+): 228
1-(trans-4-tert-butylcyclohexyloxy)-2-butanol:
[Compound (8)]

IR (film, cm-1): 1030, 1104, 1368, 1458, 2870, 2938,
3466 NMR (60 MHZ, CDC13/ ppm) : 0.87 (s, 9H) , 0.97 (t, J=7Hz,
3H), 1.0-2.4 (m, 12H), 3.0-3.8 (m, 4H) GC-MS(M+): 228
Example 6;
Synthesis of 1-(4-tert-butylcyclohexyloxy)-2-methyl-2
propanol: -
[Compound (9)]
The synthesis was carried out in the same manner as described in Example 1, except that 20.0 g (0.128 mol) of 4-tert-butylcyclohexanol (cis:trans=4:6) and 8.8 g (0.128 mol) of 2-methylpropionoxide were used instead of 30.0 g (0.192 mol) of 2-tert-butylcyclohexanol (cis:trans=8:2) and 11.1 g (0.192 mol) of propyleneoxide. 6.2 g of 4-tert-butylcyclo¬hexanol and 14.6 g of 1-(4-tert-butylcyclohexyloxy)-2-methyl-2-propanol (cis:trans=4:6) were obtained in a 50% yield.
1-(4-tert-butylcyclohexyloxy)-2-methyl-2-propanol
(cis:trans=4:6):
[Compound (9)]
IR (film, cm-1): 918, 1098, 1368, 1470, 2938, 3448,
NMR (200 MHz, CDC13, ppm): 0.84 (s, 9H), 1.03 (s, 3.6H),
1.06 (s, 2.4H), 0.8-2.2 (m, 9H), 2.42 (s, 0.6H), 2.55 (s, 0.4H), 3.1-3.3 (m, 1H), 3.19 (s, 0.8H), 3.28 (s, 1.2H)

GC-MS(M+): 228 (cis), 228 (trans)
Example 7;
Synthesis of 2-(4-tert-butylcyclohexyloxy)-3-butanol:
[Compound (10)]
The synthesis was carried out in the same manner as described in Example 1, except that 20.0 g (0.128 mol) of 4-tert-butylcyclohexanol (cis:trans=4:6) and 8.8 g (0.128 mol) of 2,3-butyleneoxide were used instead of 30.0 g (0.192 mol) of 2-tert-butylcyclohexanol (cis:trans=8:2) and 11.l g (0.192 mol) of propyleneoxide. 11.2 g of 4-tert-butylcyclohexanol and 9.3 g of 2-(4-tert-butylcyclohexyloxy)-3-butanol (a mixture of cis-trans and threo-erythro isomers) were obtained in a 32% yield.
2-(4-tert-butylcyclohexyloxy)-3-butanol:
[Compound (10)]
IR (film, cm"1): 912, 969, 1098, 1158, 1260, 1320,
1368, 1446, 2938, 3424
NMR (200 MHz, CDC13, ppm): 0.87 (s, 9H), 1.08 (d, J=7Hz,
3H), 1.12 (d, J=7Hz, 3H) , 0.9-2.0 (m, 9H) , 2.32 (br.d, J=3.5Hz, IH) , 3.5-3.7 (m, IH), 3.7-3.9 (m, IH)
GC-MS(M+): 228
Example 8:
Synthesis of 1-(3-tert-fcutylcyclohexyloxy)-2-propanol:

[Compounds (11) and (12)]
The synthesis was carried out in the same manner as described in Example 1, except that 30.0 g (0.192 mol) of 3-tert-butylcyclohexanol (cis:trans=2:8) was used instead of 30.0 g (0.192 mol) of 2-tert-butylcyclohexanol (cis:trans=8:2). 10.2 g of 3-tert-butylcyclohexanol and 15.2 g of l-(3-tert-butylcyclohexyloxy)-2-propanol (cis:trans=2:8) (bp. 135 to 138°C/9 mm Hg) were obtained in a 37% yield. Then, the cis-trans isomers of
1-(3-tert-butylcyclohexyloxy)-2-propanol were separated from each other in the same manner as described in Example 1.
1-(cis-3-tert-butylcyclohexyloxy)-2-propanol:
[Compound (11)]
IR (film, cm'1): 963, 1089, 1368, 1392, 1452, 2938,
3424
NMR (200 MHz, CDC13, ppm): 0.83 (s, 9H), 1.00 (d, J=7 Hz,
3H), 0.8-2.1 (m, 9H), 2.61 (s, 1H), 3.1 -3.2 ((m, 1H), 3.3-3.4 (m, 1H), 3.69 (s, 1H), 3.92 (br.s, 1H) GC-MS(M+): 214
1-(trans-3-tert-butylcyclohexyloxy)-2-propanol:
[Compound (12)]
IR (film, cm"1): 966, 1095, 1368, 1395, 1464, 2938,
3448
NMR (200 MHz, CDC13, ppm): 0.86 (s, 9H) , 1.00 (t, J=7Hz,

3H) , 0.8-2.2 (m, 9H), 2.5 (s, 1H) , 3.1-3.3 (m, 2H), 3.4-3.6 (m, 1H), 3.91 (br.s, 1H) GC-MS(M+): 214
Example 9;
Synthesis of 1-(3-tert-butylcyclohexyloxy)-2-butanol:
[Compounds (13) and (14)]
The synthesis was carried out in the same manner as described in Example 1, except that 30.0 g (0.192 mol) of 3-tert-butylcyclohexanol (cis:trans=2:8) and 13'. 8 g (0.192 mol) of 1,2-butyleneoxide were used instead of 30.0 g (0,192 mol) of 2-tert-butylcyclohexanol (cis:trans=8:2) and 11.1 g (0.192 mol) of propyleneoxide. 11.3 g of 3-tert-butylcyclo¬hexanol and 9.3 g of 1-(3-tert-butylcyclohexyloxy)-2-butanol (cis:trans=2:8) (bp. 145 to 148°C/10 mm Hg) were obtained in a 32% yield. Then, the cis-trans isomers of 1-(3-tert-butyl¬cyclohexyloxy) -2-butanol were separated from each other in the same manner as described in Example 1.
1-(cis-3-tert-butylcyclohexyloxy)-2-butanol:
[Compound (13)]
IR (film, cm'1) : 1095, 1368, 1464, 2938, 3454 NMR (200 MHz, CDC13, ppm): 0.83 (s, 9H), 0.97 (t, J=7Hz,
3H), 0.8-2.1 (m, 11H), 2.50 (s, 1H), 3.1-3.3 (m, 1H), 3.4-3.5 (m, 1H), 3.69 (br.s, 2H)

GC-MS(M+): 228 l-(trans-3-tert-butylcyclohexyloxy)-2-butanol:
[Compound (14)]
IR (film, C m-1): 1095, 1368, 1464, 2938, 3454
NMR (200 MHz, CDC13, ppm) : 0.86 (s, 9H) , 0.97 (t, J=7HZ,
3H), 0.8-1.9 (m, 9H), 2.06 (br.s, 2H), 2.42 (s, 1H), 3.1-3.4 (m, 2H) , 3.4-3.6 (m, 1H), 3.6-3.8 (m, 1H)
GC-MS(M+): 228
Example 10:
Synthesis of l-(2-tert-butyl-5-methylcyclohexyloxy)-2-
butanol:
[Compound (15)]
(a) The synthesis was carried out in the same manner as described in Example 3a, except that 382 g (2.33 mol) of 2-tert-butyl-5-methylphenol was used instead of 350 g (2.33 mol) of 2-tert-butylphenol. 522 g of
l-(2-tert-butyl-5-methylphenyloxy)-2-butanol (bp. 139 to 140°C/3.5 mm Hg) were obtained in a 95% yield.
1-(2-tert-butyl-5-methyIphenyloxy)-2-butanol:
IR (film, cm-1): 808, 1042, 1086, 1144, 1182, 1258,
1294, 1410, 1460, 1502, 1612, 2960, 3404
NMR (200 MHz, CDC13/ ppm): 1.07 (t, J=7Hz, 3H), 1.39 (s,
9H) , 1.5-1.8 (m, 2H) , 2.14 (d, J=4Hz,

1H) , 2.31 (s, 3H), 3.8-4.1 (m, 3H) , 6.6-7.3 (m, 3H) GC-MS(M+): 236
(b) The synthesis was carried out in the same manner as described in Example 3b, except that 50 g (0.21 mol) of l-(2-tert-butyl-5-methylphenyloxy)-2-butanol were used instead of 50 g (0.23 mol) of l-(2-tert-butylphenyloxy)-2-butanol and the amount of the same palladium catalyst was increased to 2.5 g to effect the reaction for 4 hours, to obtain 32 g of l-(2-tert-butyl-5-methylcyclohexyloxy)-2-butanol (bp. 139 to 140°C/3.5 mm Hg) in a 63% yield.
1-(2-tert-butyl-5-methylcyclohexyloxy)-2-butanol:
[Compound (15)]
IR (film, cm-1): 1086, 1365, 1461, 2950, 3448
NMR (200 MHz, CDC13,, ppm) : 0.94 (s, 9H) , 0.8-2.4 (m,
15H), 2.9-3.8 (m, 4H) GC-MS(M+): 242
Example 11:
Synthesis of 1-(2-isopropylcyclohexyloxy)-2-butanol:
[Compound (16)]
The synthesis was carried out in the same manner as described in Example 1, except that 20.0 g (0.141 mol) of 2-isopropylcyclohexanol (cis:trans=6:4) and 10.1 g (0.141 mol) of 1,2-butyleneoxide were used instead of 30.0 g (0.192 mol) of 2-tert-butylcyclohexanol (cis:trans=8:2) and 11.1 g (0.192

mol) of propyleneoxide. 6.5 g of 2-isopropylcyclohexanol and 16.6 g of l-(2-isopropylcyclohexyloxy)-2-butanol (cis:trans=6:4) were obtained in a 55% yield. 1-(2-isopropylcyclohexyloxy)-2-butanol: [Compound (16)] IR (film, cm'1): 963, 981, 1092, 1140, 1200, 1386,
1461, 2926, 3424
NMR (200 MHz, CDC13, ppm): 0.90 (d, J=7Hz, Ca3H), 0.92
(d, J=7Hz, Ca3H), 0.98 (t, J=7Hz, 3H), 0.8-1.9 (m, 11H), 1.9-2.2 (m, 1H), 2.3-2.6 (m, 1H), 2.9-3.8 (m, 3H) GC-MS(M+): 214
Example 12;
Synthesis of 1-(2,6-diisopropylcyclohexyloxy)-2-propanol:
[Compound (17)]
(a) The synthesis was carried out in the same manner as described in Example 3a, except that 50.0 g (0.28 mol) of 2,6-diisopropylphenol and 22.0 g (0.31 mol) of propyleneoxide were used instead of 350 g (2.33 mol) of 2-tert-butylphenol and 176 g (2.45 mol) of 1,2-butyleneoxide. 59.5 g of 1-(2,6-diisopropylphenyloxy)-2-propanol (bp. 138°C/5 mm Hg) were obtained in a 90% yield.
1-(2,6-diisopropylphenyloxy)-2-propanol:
IR (film, cm-1): 756, 798, 1020, 1047, 1185, 1254,
1323, 1446, 2866, 2962, 3064, 3406

NMR (200 MHz, CDC13, ppm) : 1.24 (d, J=7Hz, 12H) ,. 1.28 (d,
J=7 Hz, 3H), 2.57 (br.s, 1H), 3.31 (scp, J=7 Hz, 2H), 3.5-3.9 (m, 2H), 4.1-4.4 1H), 2.31 (s, 3H), 3.8-4.1 (m, 3H), (m, 1H), 7.11 (s, 3H) GC-MS(M+): 236
(b) The synthesis was carried out in the same manner as described in Example 3b, except that 30 g (0.13 mol) of 1-(2,6-diisopropylphenyloxy)-2-propanol were used instead of 50 g (0.23 mol) of 1-(2-tert-butylphenyloxy)-2-butanol and the amount of the same palladium catalyst was increased to 1.5 g. The reaction was carried out for 5 hours and 21 g of l-(2,6-diisopropylcyclohexyloxy)-2-propanol were obtained in a 67% yield.
1-(2,6-diisopropylcyclohexyloxy)-2-propanol:
[Compound (17)]
IR (film, cm-1): 960, 1095, 1158, 1371, 1386, 1470,
2944, 3406
NMR (200 MHz, CDC13, ppm): 0.8-1.1 (m, 12H), 1.13 (d,
J=7Hz, 3H), 1.1-1.9 (m, 10H), 2.53 (d, J=3Hz, 1H), 3.2-4.1 (m, 4H) GC-MS(M+): 242

Example 13:
Synthesis of 1-(2-cyclohexylcyclohexyloxy)-2-propanol: [Compound (18)]
The synthesis was carried out in the same manner as described in Example 1, except that 34.9 g (0.192 mol) of 2-cyclohexylcyclohexanol (cis:trans=8:2) was used instead of 30.0 g (0.192 mol) of 2-tert-butylcyclohexanol (cis:trans=8:2). 10.4 g of 2-cyclohexylcyclohexanol and 24.9 g of 1-(2-cyclohexylcyclohexyloxy)-2-propanol were obtained in a 54% yield.
1-(2-cyclohexylcyclohexyloxy)-2-propanol:
[Compound (18)]
IR (film, cm-1): 963, 1092, 1143, 1260, 1317, 1338,
1368, 1449, 2848, 2932, 3406
NMR (200 MHz, CDC13, ppm): 1.16 (d, J=7Hz, 3H), 0.8-2.1
(m, 20H), 2.52 (d, J=2.4Hz, 1H), 2.94 (dd, J=8.7Hz and J=8.7Hz, 1H), 3.57 (dd, J=8.7Hz and J=2.4Hz, 1H), 3.6 3.7 (m, 1H), 3.8-4.0 (m, 1H) GC-MS(M+): 240

Example 14;

(Table Removed)
*1: Trademark of IFF Co.; 4- (4-hydroxy-4-methyl-pentyl) 3 -cyclohexen-1-carboxyaldehyde
*2: Trademark of Kao Chemicals Co., Ltd.; 2-methyl-4-(2,3, 3-trimethyl-3-cyclopentene-l-yl) -2-butene-l-ol
To 880 parts by weight of the above perfume composition 120 parts by weight of 1- (2-tert-butylcyclohexyloxy) -2-butanol
of the present invention was added to obtain a chypre-type perfume composition having a mild odor with sweetness and bulkiness so as to wrap the wildness of the patchouli oil.
Obviously, numerous modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.


WE CLAIM:
1. A process for preparing an α - (alkylcyclohexyloxy)
alkanol represented by formula (1):

(Formula Removed)
wherein at least one of R1, R2, R3, R4 and R5 is the group

(Formula Removed)
wherein R9 and R10 are the same or different alkyl groups having 1 to 4 carbon atoms or are coupled with each other to form a cycloalkyl group of the kind such as herein described, and R11 is a hydrogen atom or an alkyl group having 1 to 4 carbons or is a hydrogen atom when R9 and R10 form the cycloalkyl group, and the remaining R1, R2, R3, R4 and R5 groups are hydrogen atoms or methyl groups, and wherein R6, R7 and R8 are hydrogen atoms or the same or different alkyl groups having 1 to 6 carbon atoms, which comprises the steps of reacting an alklcyclohexanol of formula (2):

(Formula Removed)
Wherein R1, R2, R3, R4 and R5 have the same meanings as defined before, with a strong base of the kind such as herein described at a temperature of from 30 to 120°C; and then

reacting the product obtained with an epoxide of formula (3);
(Formula Removed)
wherein R6, R7 and R8 have the same meanings as defined above at a temperature of from 30 to 120°C.
2. A process for preparing an α -(alkylcyclohexyloxy)- ß
alkanol as claimed in claim 1, wherein the amount of the strong base
used ranges from 0.1 to 2.0 equivalent per equivalent of the
alkylcyclohexanol.
3. A process for preparing an α -(alkylcyclohexyloxy)- ß
alkanol substantially as herein described with reference to the
foregoing examples.



Documents:

2049-del-1996-abstract.pdf

2049-del-1996-claims.pdf

2049-del-1996-correspondence-others.pdf

2049-del-1996-correspondence-po.pdf

2049-del-1996-description (complete).pdf

2049-del-1996-form-1.pdf

2049-del-1996-form-13.pdf

2049-del-1996-form-19.pdf

2049-del-1996-form-2.pdf

2049-del-1996-form-3.pdf

2049-del-1996-form-4.pdf

2049-del-1996-form-60.pdf

2049-del-1996-gpa.pdf

2049-del-1996-petition-137.pdf

2049-del-1996-petition-138.pdf

abstract.jpg


Patent Number 215233
Indian Patent Application Number 2049/DEL/1996
PG Journal Number 10/2008
Publication Date 07-Mar-2008
Grant Date 22-Feb-2008
Date of Filing 18-Sep-1996
Name of Patentee KAO CORPORATION
Applicant Address 1-14-10, NIHONBASHIKAYABA-CHO,CHUO-KU,TOKYO, JAPAN.
Inventors:
# Inventor's Name Inventor's Address
1 JUNJI KOSHINO 283-44,HATAKE,IWADECHO,NAGA-GUN,WAKAYAMA,JAPAN.
2 YOSHIAKI FUJIKUR 271-6, YAMAMOTOCHO, UTSUNOMIYA-SHI, TOCHIGI, JAPAN.
3 NAO TOI 6-21-2, NAKASHIZU, SAKURA-CHI, CHIBA, JAPAN.
4 RIEKO YUKI 4-27-16, KAMIIGUSA SUGINAMI-KU, TOKYO, JAPAN.
5 HAJIME MIYABE SEIWARYO, 1130 NISHIHAM, WAKAYAMA-SHI, WAKAYAMA, JAPAN,
PCT International Classification Number A61K 007/46
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA