GB530269A - Improvements in or relating to the manufacture of the nitriles of organic carboxylicacids - Google Patents
Improvements in or relating to the manufacture of the nitriles of organic carboxylicacidsInfo
- Publication number
- GB530269A GB530269A GB1669439A GB1669439A GB530269A GB 530269 A GB530269 A GB 530269A GB 1669439 A GB1669439 A GB 1669439A GB 1669439 A GB1669439 A GB 1669439A GB 530269 A GB530269 A GB 530269A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acids
- anhydride
- nitriles
- added
- 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
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/20—Preparation of carboxylic acid nitriles by dehydration of carboxylic acid amides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
530,269. Nitriles. DREYFUS, H. June 7, 1939, Nos. 16694 and 19707. [Class 2 (iii)] Nitriles of carboxylic acids are made by dehydrating amides or ammonium salts of the acids with the anhydride of an aliphatic monocarboxylic acid such as acetic anhydride. The production of dinitriles of aliphatic acids such as suberic and sebacic acids, aromatic acids and aliphatic-aromatic acids such as benzylmalonic acid, dicyanogen, and the nitriles of higher fatty acids such as lauric, palmitic, and stearic acids is mentioned, the particular description relating to a diponitrile. The reaction temperature may be such that the aliphatic acid produced from the anhydride distils off, and a diluent which forms anazeotropic mixture with such acid may be employed, or the diluent may be of relatively high boiling-point. Preferably the amide is added a little at a time to excess of the anhydride. When an ammonium salt is the initial material a greater excess of anhydride is used, and if desired the reaction can be carried out in two stages, the ammonium salt being added a little at a time in the first stage, and then more anhydride being added to effect the second stage. In an example, adipamide is added a little at a time to a body of boiling acetic anhydride under reflux.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1669439A GB530269A (en) | 1939-06-07 | 1939-06-07 | Improvements in or relating to the manufacture of the nitriles of organic carboxylicacids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1669439A GB530269A (en) | 1939-06-07 | 1939-06-07 | Improvements in or relating to the manufacture of the nitriles of organic carboxylicacids |
Publications (1)
Publication Number | Publication Date |
---|---|
GB530269A true GB530269A (en) | 1940-12-09 |
Family
ID=10081932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1669439A Expired GB530269A (en) | 1939-06-07 | 1939-06-07 | Improvements in or relating to the manufacture of the nitriles of organic carboxylicacids |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB530269A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2458373A (en) * | 1945-08-10 | 1949-01-04 | Eastman Kodak Co | Process for preparing nitriles of dicarboxylic acids |
FR2317294A1 (en) * | 1975-07-11 | 1977-02-04 | Hoffmann La Roche | PREPARATION OF 5-CYANO-4 METHYL-OXAZOLE (1,3) |
-
1939
- 1939-06-07 GB GB1669439A patent/GB530269A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2458373A (en) * | 1945-08-10 | 1949-01-04 | Eastman Kodak Co | Process for preparing nitriles of dicarboxylic acids |
FR2317294A1 (en) * | 1975-07-11 | 1977-02-04 | Hoffmann La Roche | PREPARATION OF 5-CYANO-4 METHYL-OXAZOLE (1,3) |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB530269A (en) | Improvements in or relating to the manufacture of the nitriles of organic carboxylicacids | |
GB1298075A (en) | Production of di-neo dicarboxylic acids | |
GB1027882A (en) | Manufacture of amide compounds | |
DE836353C (en) | Process for the preparation of polyvalent alkyleneimine esters | |
US2520673A (en) | Acid salts of an n-acetyl-10-trimethylammoniumdihydrohomomeroquinene ethyl ester and their production | |
ES405643A1 (en) | Procedure for the preparation of new acids 4- (4 bifenilil) -4-hydroxy-butirrics, its esteres or lactonas. (Machine-translation by Google Translate, not legally binding) | |
GB1034945A (en) | Production of n-substituted carbamic acid esters | |
ES406125A1 (en) | Procedure for the preparation of acids 4- (4-bifenilil) -butirrics and their steres. (Machine-translation by Google Translate, not legally binding) | |
DE721437C (en) | Process for the preparation of acidic esters of the alkylated 1,4-naphthohydroquinones | |
AT164531B (en) | Process for the preparation of γ-methylmercapto-α-aminobutyric acid | |
GB1475163A (en) | Unsaturated nitriles | |
AT162226B (en) | Process for the preparation of new basic esters of trisubstituted acetic acids. | |
AT234914B (en) | Process for the preparation of the new 6-morphine mononicotinic acid ester | |
ES178216A1 (en) | A PROCEDURE FOR OBTAINING AMIDES AND RELATED BODIES FROM ESTERS OF AROMATIC CARBOXYL ACIDS | |
AT205667B (en) | Process for the production of an easily digestible chocolate preparation with therapeutic effect | |
DE849242C (en) | Process for the preparation of diadipic acid | |
GB519894A (en) | Manufacture of new amines and their salts | |
SU150793A1 (en) | Method for producing alkoxymethylene amides of 0,0-dialkylthio and 0,0-dialkyl dithiophosphoryl acetic acid | |
GB1099061A (en) | m-dioxane derivatives, methyl isogeraniol and its esters | |
GB569524A (en) | Nitriles and method of making the same | |
GB767679A (en) | Aminoacid amides | |
GB512583A (en) | Improvements in preparation of salts of hexamethylenetetramine | |
GB802541A (en) | Alkylamine reaction products | |
ES432219A1 (en) | Phenylalkenoic acid derivatives | |
GB598798A (en) | A process for the manufacture of 3.4-di-(p-hydroxy-phenyl)-hexadiene-2.4 |