GB633435A - Improvements in or relating to process for producing paraacetylbenzyl acetate, para-(alpha-hydroxyethyl) benzyl acetate and para-(alpha-acetoxyethyl) benzyl acetate - Google Patents
Improvements in or relating to process for producing paraacetylbenzyl acetate, para-(alpha-hydroxyethyl) benzyl acetate and para-(alpha-acetoxyethyl) benzyl acetateInfo
- Publication number
- GB633435A GB633435A GB10200/47A GB1020047A GB633435A GB 633435 A GB633435 A GB 633435A GB 10200/47 A GB10200/47 A GB 10200/47A GB 1020047 A GB1020047 A GB 1020047A GB 633435 A GB633435 A GB 633435A
- Authority
- GB
- United Kingdom
- Prior art keywords
- para
- benzyl acetate
- ethyl
- alpha
- acetate
- 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
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/04—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds
- C07C67/05—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Para-acetyl-benzyl acetate is obtained by heating para-ethyl-benzyl acetate in the liquid phase with gaseous oxygen in the presence of an oxidation catalyst; the product may be catalytically hydrogenated to yield para(alpha-hydroxy-ethyl) benzyl acetate, which is then acetylated to give para-(alpha-acetoxy-ethyl) benzyl acetate. Any metal oxide or hydroxide oxidation catalyst may be used, e.g. chromium oxide, a preferred catalyst being chromium oxide and calcium carbonate in the proportions of one to four by weight. The oxidation is preferably carried out between 110 DEG C. and 160 DEG C. at atmospheric, reduced, or slightly increased pressure. The oxygen may be pure or mixed with an inert gas, e.g. as air. Examples are given of the three steps of the process and also of the production of the starting material from ethyl benzene, which is converted by means of hydrogen chloride and paraformaldehyde into para-ethyl-benzyl chloride and the latter heated with sodium acetate and glacial acetic acid to give para-ethyl-benzyl acetate. The para-acetyl-benzyl acetate may be converted into the semicarbazone and the 2 : 4-dinitro-phenyl-hydrazone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US633435XA | 1946-06-22 | 1946-06-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB633435A true GB633435A (en) | 1949-12-19 |
Family
ID=22048556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10200/47A Expired GB633435A (en) | 1946-06-22 | 1947-04-17 | Improvements in or relating to process for producing paraacetylbenzyl acetate, para-(alpha-hydroxyethyl) benzyl acetate and para-(alpha-acetoxyethyl) benzyl acetate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB633435A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4256907A (en) * | 1977-05-11 | 1981-03-17 | Bayer Aktiengesellschaft | Preparation of substituted vinylcyclopropane-carboxylic acid esters |
-
1947
- 1947-04-17 GB GB10200/47A patent/GB633435A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4256907A (en) * | 1977-05-11 | 1981-03-17 | Bayer Aktiengesellschaft | Preparation of substituted vinylcyclopropane-carboxylic acid esters |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB633435A (en) | Improvements in or relating to process for producing paraacetylbenzyl acetate, para-(alpha-hydroxyethyl) benzyl acetate and para-(alpha-acetoxyethyl) benzyl acetate | |
| GB1155022A (en) | Hydroxymethane Carboxylic Acid Esters and process for their manufacture | |
| GB576229A (en) | Controlled oxidation of alicyclic hydrocarbons and of their derivatives | |
| US2082946A (en) | Process of preparing beta-bromethyl benzene | |
| US2011011A (en) | Process of combining acetylene with acetic acid | |
| US2027378A (en) | Method of converting alcohols to acids | |
| GB747417A (en) | Improvements in or relating to the production of phthalic acids | |
| GB1026725A (en) | Production of adipic acid | |
| US3281462A (en) | Preparation of acetic anhydride by the catalyzed oxidation of acetaldehyde in the presence of amixture of boric acid and oxalic acid | |
| GB697776A (en) | Process for the preparation of cumene hydroperoxide | |
| GB785108A (en) | Manufacture of hexahydrobenzylamine | |
| GB659288A (en) | Improvements in or relating to the production of vinyl allyl ether | |
| GB819677A (en) | Process for preparing hexachloropentenones and pentachlorodienoic acid | |
| GB871836A (en) | Improvements in or relating to methods of synthesizing 2, 4, 4, 4-tetrachloro-butyric acid | |
| GB674710A (en) | A method of preparing aliphatic acyl hydroxypolycarboxylic acid anhydrides | |
| GB682354A (en) | Improvements in or relating to the preparation of haloacetic acids | |
| GB879564A (en) | Process for the production of cyclohexanone from cyclohexylamine | |
| GB701093A (en) | Manufacture of cyclic alcohols and esters thereof | |
| GB593571A (en) | Improvements in or relating to the manufacture of crotonic acid | |
| GB907183A (en) | Improvements in the production of cyclododecanone | |
| GB823233A (en) | Production of sorbic acid | |
| GB716352A (en) | Improvements in the production of alcohols | |
| GB708020A (en) | Improvements relating to compounds of the cyclopentanodimethylpolyhydrophenanthrene series | |
| GB772410A (en) | A process for preparing aliphatic dicarboxylic acids and the resulting acids | |
| GB376045A (en) | An improved process for producing acetaldehyde and acetic acid from acetylene |