GB1525188A - Process for the preparation of alpha-substituted ketones - Google Patents
Process for the preparation of alpha-substituted ketonesInfo
- Publication number
- GB1525188A GB1525188A GB43560/76A GB4356076A GB1525188A GB 1525188 A GB1525188 A GB 1525188A GB 43560/76 A GB43560/76 A GB 43560/76A GB 4356076 A GB4356076 A GB 4356076A GB 1525188 A GB1525188 A GB 1525188A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carbon atoms
- hydrocarbon radical
- formula
- defined above
- aliphatic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C403/00—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone
- C07C403/02—Derivatives of cyclohexane or of a cyclohexene or of cyclohexadiene, having a side-chain containing an acyclic unsaturated part of at least four carbon atoms, this part being directly attached to the cyclohexane or cyclohexene or cyclohexadiene rings, e.g. vitamin A, beta-carotene, beta-ionone having side-chains containing only carbon and hydrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/51—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition
- C07C45/511—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by pyrolysis, rearrangement or decomposition involving transformation of singly bound oxygen functional groups to >C = O groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2601/00—Systems containing only non-condensed rings
- C07C2601/12—Systems containing only non-condensed rings with a six-membered ring
- C07C2601/14—The ring being saturated
Abstract
1525188 α-Substituted ketones RHONEPOULENC INDUSTRIES 20 Oct 1976 [21 Oct 1975] 43560/76 Heading C2C A process for the preparation of a ketone containing a secondary or tertiary aliphatic carbon atom in at least one α-position relative to the carbonyl group, of formula: in which Ro represents a saturated or unsaturated, aliphatic or cycloaliphatic hydrocarbon radical of 1 to 30 carbon atoms, R 1 represents a hydrocarbon radical of 1 to 30 carbon atoms, and R 2 and R 3 independently represent hydrogen, or a hydrocarbon radical of 1 to 30 carbon atoms, or R 1 , together with R 2 or R 3 , forms a divalent hydrocarbon radical of 3 to 13 carbon atoms, or R 2 and R 3 together form a divalent hydrocarbon radical of 4 to 14 carbon atoms, and each of Ro, R 1 , R 2 and R 3 is optionally substituted by an inert functional group (as hereinbefore defined), which process comprises reacting an aliphatic halide of formula:- in which Ro is as defined above and X represents a chlorine, bromine or iodine atom, with an enoxysilane of formula: in which R 1 , R 2 and R<SP>3</SP> are as defined above, n represents an integer from 1 to 3, R represents a hydrocarbon radical of 1 to 20 carbon atoms, or, if n is I or 2, at most one R represents a radical of formula:- in which R 1 , R 2 , R 3 and n are as defined above, R 4 represents a hydrocarbon radical of 1 to 20 carbon atoms, and A represents a valency bond, an oxygen atom or a divalent hydrocarbon radical of 1 to 10 carbon atoms, in the presence of a catalyst comprising a metal or a derivative of a metal of group 1b, 2b, 3b, 4a, 4b, 5a, 5b, 6b, 7b or 8 (including the lanthanides and the actinides) of the Periodic classification of the elements.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7532978A FR2328684A1 (en) | 1975-10-21 | 1975-10-21 | PROCESS FOR PREPARING A-SUBSTITUTED KETONES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1525188A true GB1525188A (en) | 1978-09-20 |
Family
ID=9161757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB43560/76A Expired GB1525188A (en) | 1975-10-21 | 1976-10-20 | Process for the preparation of alpha-substituted ketones |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS5251310A (en) |
| AT (1) | AT347911B (en) |
| BE (1) | BE847479A (en) |
| CA (1) | CA1087622A (en) |
| CH (1) | CH616138A5 (en) |
| DE (1) | DE2647704A1 (en) |
| ES (1) | ES452594A1 (en) |
| FR (1) | FR2328684A1 (en) |
| GB (1) | GB1525188A (en) |
| IT (1) | IT1083969B (en) |
| NL (1) | NL7611600A (en) |
| SE (1) | SE7611660L (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104844401A (en) * | 2015-06-02 | 2015-08-19 | 重庆医科大学 | Method for synthesizing 1, 4-diketone compound without catalyst |
-
1975
- 1975-10-21 FR FR7532978A patent/FR2328684A1/en active Granted
-
1976
- 1976-10-19 JP JP51124506A patent/JPS5251310A/en active Pending
- 1976-10-20 GB GB43560/76A patent/GB1525188A/en not_active Expired
- 1976-10-20 BE BE171670A patent/BE847479A/en unknown
- 1976-10-20 CA CA263,819A patent/CA1087622A/en not_active Expired
- 1976-10-20 NL NL7611600A patent/NL7611600A/en not_active Application Discontinuation
- 1976-10-20 SE SE7611660A patent/SE7611660L/en unknown
- 1976-10-20 CH CH1326576A patent/CH616138A5/en not_active IP Right Cessation
- 1976-10-21 IT IT28564/76A patent/IT1083969B/en active
- 1976-10-21 DE DE19762647704 patent/DE2647704A1/en not_active Withdrawn
- 1976-10-21 AT AT785576A patent/AT347911B/en not_active IP Right Cessation
- 1976-10-21 ES ES452594A patent/ES452594A1/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104844401A (en) * | 2015-06-02 | 2015-08-19 | 重庆医科大学 | Method for synthesizing 1, 4-diketone compound without catalyst |
Also Published As
| Publication number | Publication date |
|---|---|
| AT347911B (en) | 1979-01-25 |
| CH616138A5 (en) | 1980-03-14 |
| DE2647704A1 (en) | 1977-04-28 |
| ATA785576A (en) | 1978-06-15 |
| FR2328684B1 (en) | 1979-05-04 |
| IT1083969B (en) | 1985-05-25 |
| BE847479A (en) | 1977-04-20 |
| SE7611660L (en) | 1977-04-22 |
| ES452594A1 (en) | 1977-11-16 |
| CA1087622A (en) | 1980-10-14 |
| JPS5251310A (en) | 1977-04-25 |
| NL7611600A (en) | 1977-04-25 |
| FR2328684A1 (en) | 1977-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |