GB466504A - Improvements in or relating to the synthesis of esters of methacrylic acid - Google Patents
Improvements in or relating to the synthesis of esters of methacrylic acidInfo
- Publication number
- GB466504A GB466504A GB3306235A GB3306235A GB466504A GB 466504 A GB466504 A GB 466504A GB 3306235 A GB3306235 A GB 3306235A GB 3306235 A GB3306235 A GB 3306235A GB 466504 A GB466504 A GB 466504A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- esters
- relating
- synthesis
- methacrylic acid
- 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
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/66—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety
- C07C69/67—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids
- C07C69/675—Esters of carboxylic acids having esterified carboxylic groups bound to acyclic carbon atoms and having any of the groups OH, O—metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids of saturated hydroxy-carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/18—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group
- C07C67/22—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from nitriles
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Methyl methacrylate is manufactured by converting acetone cyanhydrin into a -hydroxyisobutyric acid by hydrolysis, converting the acid into its methyl ester by treating its alkali metal (e.g. sodium or potassium) salt with a methylating agent, and treating the ester with a dehydrating agent. In an example, crude acetone cyanhydrin is hydrolyzed by means of hydrochloric acid, the a -hydroxyisobutyric acid is neutralized with caustic soda, the sodium salt is suspended in acetone and treated with dimethyl sulphate, and the resulting methyl ester is treated with phosphorus pentoxide in the presence of hydroquinone. Specifications 300,040, [Class 2 (iii)], 359,262, 395,687, 410,208, and 416,007 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3306235A GB466504A (en) | 1935-11-28 | 1935-11-28 | Improvements in or relating to the synthesis of esters of methacrylic acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3306235A GB466504A (en) | 1935-11-28 | 1935-11-28 | Improvements in or relating to the synthesis of esters of methacrylic acid |
Publications (1)
Publication Number | Publication Date |
---|---|
GB466504A true GB466504A (en) | 1937-05-28 |
Family
ID=10348037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3306235A Expired GB466504A (en) | 1935-11-28 | 1935-11-28 | Improvements in or relating to the synthesis of esters of methacrylic acid |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB466504A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2571194A (en) * | 1948-11-06 | 1951-10-16 | Brothman And Associates A | Process for the manufacture of methacrylic acid esters from acetone cyanhydrin |
DE1133712B (en) * | 1960-02-26 | 1962-07-26 | Hoechst Ag | Process for the preparation of ª ‡ -hydroxyisobutyric acid |
-
1935
- 1935-11-28 GB GB3306235A patent/GB466504A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2571194A (en) * | 1948-11-06 | 1951-10-16 | Brothman And Associates A | Process for the manufacture of methacrylic acid esters from acetone cyanhydrin |
DE1133712B (en) * | 1960-02-26 | 1962-07-26 | Hoechst Ag | Process for the preparation of ª ‡ -hydroxyisobutyric acid |
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