GB854923A - Preparation of methyl ª‰-cyanoisobutyrate - Google Patents
Preparation of methyl ª‰-cyanoisobutyrateInfo
- Publication number
- GB854923A GB854923A GB14633/57A GB1463357A GB854923A GB 854923 A GB854923 A GB 854923A GB 14633/57 A GB14633/57 A GB 14633/57A GB 1463357 A GB1463357 A GB 1463357A GB 854923 A GB854923 A GB 854923A
- Authority
- GB
- United Kingdom
- Prior art keywords
- range
- methyl
- cyanoisobutyrate
- methyl methacrylate
- temperature
- 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
- C07C255/00—Carboxylic acid nitriles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Methyl b -cyanoisobutyrate is prepared by reacting hydrocyanic acid and methyl methacrylate at superatmospheric pressures in the range of 50 to 2,000 p.s.i.g. and at a temperature in the range of 130 DEG to 300 DEG C. and in the presence of an alkaline catalyst whose aqueous 0,1 molar solution has a pH of at least 9. When the process is conducted batchwise, a temperature in the range of 130 DEG to 275 DEG C. is used, and when operating on a continuous basis, the preferred temperature range is from 175 DEG to 225 DEG C. Suitable alkaline catalysts are the alkali metals and their carbonates, alkali and alkaline earth metal alkoxides, oxides, hydroxides, peroxides and cyanides, tertiary amines and quaternary ammonium bases. The hydrocyanic acid may be introduced in the gaseous or liquid state or in a solution with methyl methacrylate. A polymerization inhibitor, such as hydroquinone may be added to prevent polymerization of methyl methacrylate when the most active catalyst or highest temperatures are employed. The methyl b -cyanoisobutyrate may be used as a solvent for polymers or as an intermediate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US854923XA | 1956-05-15 | 1956-05-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB854923A true GB854923A (en) | 1960-11-23 |
Family
ID=22191961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14633/57A Expired GB854923A (en) | 1956-05-15 | 1957-05-08 | Preparation of methyl ª‰-cyanoisobutyrate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB854923A (en) |
-
1957
- 1957-05-08 GB GB14633/57A patent/GB854923A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB989420A (en) | Preparation of amine oxides | |
| GB854923A (en) | Preparation of methyl ª‰-cyanoisobutyrate | |
| GB1478477A (en) | Adamantylamidines and processes for making them | |
| GB1259747A (en) | Process for the preparation of aliphatic tertiary amides | |
| GB1379268A (en) | Process for production of beta-alanine | |
| ES316418A1 (en) | Process for the preparation of 2-nitroimidazoles | |
| GB971754A (en) | Production of polymers | |
| GB1020491A (en) | A process for the preparation of ornithine | |
| GB1167097A (en) | Guanidine Derivatives | |
| ES250892A1 (en) | 6-deoxytetracyclines | |
| GB948175A (en) | Process for the production of 2, 4-diamino-6-trichloromethyl-úË-triazines | |
| GB959420A (en) | Oxyalkylated carboxylic acid amides and production thereof | |
| GB1431511A (en) | Purification of acrylonitrile | |
| GB895681A (en) | Improvements in the preparation of glycolonitrile | |
| GB1472368A (en) | Process for the preparation of 4-hydroxy-3-methoxy-phenylace tonitrile | |
| GB1041052A (en) | Process for the production of alkynols | |
| GB876591A (en) | Water-soluble polymeric substituted acrylamides | |
| GB1025426A (en) | Process for the production of cyclohexene and methylcyclohexene | |
| ES378488A1 (en) | A method of preventing precipitation from aqueous solutions of aminocarboxylic acids | |
| GB810165A (en) | Process for the preparation of lactams | |
| ES251905A1 (en) | Sulphamoyl quinazolinones | |
| ES357649A1 (en) | Process for the production of unsaturated delta-decalactone | |
| GB1252580A (en) | ||
| GB832003A (en) | Steric inversion of allothreonine and intermediates of inversion | |
| GB787061A (en) | Process for producing n-methyl--a-phenylsuccinimide |