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US4067915A
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Method for producing cyclohexane derivatives directly from aromatic hydrocarbons
Assignee: Toray Industries Inc
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Filing: 1975-05-29
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Granted: 1978-01-10
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Expires: 1995-05-29
Abstract
Abstract Cyclohexane derivatives such as cyclohexanol, cyclohexyl halides and cyclohexyl carboxylates are produced directly from aromatic hydrocarbons.
Inventors
- 👤 Yutaka Yasuhara
- 👤 Masaki Nishino
- 👤 Seikichi Matsuhisa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:34
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0215; B01J31/0225; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/64; B01J23/652; B01J23/6527; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J31/0231; B01J31/06; B01J31/08; B01J31/10; C; C07; C07C; C07C17/00; C07C17/35; C07C17/354; C07C5/00; C07C5/02; C07C5/10; B01J2231/00; B01J2231/60; B01J2231/64; B01J2231/641; B01J2231/645; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/46; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
121 words
A process for producing a cyclohexane derivative having the general formula ##STR2##wherein X is selected from the group consisting of chlorine, bromine and iodine R is a lower alkyl group having 1 to 3 carbon atoms, and n is an integer of from 0 to 2, which process comprises reacting an aromatic hydrocarbon having the general formula ##STR3##wherein R and n are the same as above, with hydrogen and a compound having the general formula HX, wherein X is the same as above, in the presence of a strong acid and a hydrogenation catalyst that contains at least one noble metal of Group VIII metals at a pressure of 0.01 - 500 Kg/cm 2 and at a temperature of 0°-300° C.
Claim 2
Dependent Claim
121 words
A process for producing a cyclohexane derivative having the general formula ##STR2##wherein X is selected from the group consisting of chlorine, bromine and iodine R is a lower alkyl group having 1 to 3 carbon atoms, and n is an integer of from 0 to 2, which process comprises reacting an aromatic hydrocarbon having the general formula ##STR3##wherein R and n are the same as above, with hydrogen and a compound having the general formula HX, wherein X is the same as above, in the presence of a strong acid and a hydrogenation catalyst that contains at least one noble metal of Group VIII metals at a pressure of 0.01 - 500 Kg/cm 2 and at a temperature of 0°-300° C.
Claim 3
Dependent Claim
9 words
A process of claim 1, wherein X is chlorine.
Claim 4
Dependent Claim
12 words
A process of claim 2, wherein the strong acid is hydrogen chloride.
Claim 5
Dependent Claim
32 words
A process of claim 2, wherein the hydrogenation catalyst contains at least one component selected from the group consisting of metals and compounds of metals of Group VIII of the Periodic System.
Claim 6
Dependent Claim
28 words
A process of claim 4, wherein the hydrogenation catalyst contains at least one component selected from the group consisting of rhodium, ruthenium, palladium, platinum, iridium, and compounds thereof.
Claim 7
Dependent Claim
16 words
A process of claim 2, wherein a carrier is employed in addition to the hydrogenation catalyst.
Claim 8
Dependent Claim
32 words
A process of claim 6, wherein the carrier is selected from the group consisting of active carbon, silica, alumina, silica-alumina, boria, tungsten trioxide, molybdenum trioxide, zeolites, asbestos, solid acids and cation-exchange resins.
Claim 9
Dependent Claim
15 words
A process of claim 2, wherein the reaction is carried out in an aqueous medium.
Claim 10
Dependent Claim
17 words
A process of claim 2, wherein the conversion of the aromatic hydrocarbon is less than 80 percent.
Claim 11
Dependent Claim
9 words
A process of claim 1, wherein X is bromine.
Claim 12
Dependent Claim
12 words
A process of claim 10, wherein the strong acid is hydrogen bromide.
Claim 13
Dependent Claim
32 words
A process of claim 10, wherein the hydrogenation catalyst contains at least one component selected from the group consisting of metals and compounds of metals of Group VIII of the Periodic System.
Claim 14
Dependent Claim
28 words
A process of claim 10, wherein the hydrogenation catalyst contains at least one component selected from the group consisting of rhodium, ruthenium, palladium, platinum, iridium, and compounds thereof.
Claim 15
Dependent Claim
15 words
A process of claim 10, wherein the reaction is carried out in an aqueous medium.
Claim 16
Dependent Claim
17 words
A process of claim 10, wherein the conversion of the aromatic hydrocarbon is less than 80 percent.
Claim 17
Dependent Claim
10 words
A process of claim 1, wherein the X is iodine.
Claim 18
Dependent Claim
12 words
A process of claim 16, wherein the strong acid is hydrogen iodide.
Claim 19
Dependent Claim
27 words
A process of claim 16, wherein the hydrogenation catalyst contains at least one component selected from the group consisting of rhodium, ruthenium, palladium, platinum, and their compounds.
Claim 20
Dependent Claim
15 words
A process of claim 16, wherein the reaction is carried out in an aqueous medium.
Claim 21
Dependent Claim
17 words
A process of claim 16, wherein the conversion of the aromatic hydrocarbon is less than 80 percent.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |