http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-610952-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_14f86e164bb6ab1032c519b42ff81a64 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C233-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-00 |
| filingDate | 1946-04-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1948-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-610952-A |
| titleOfInvention | Process for the production of carboxylic acid amides and imides |
| abstract | N-Substituted amides of carboxylic acids are obtained by reacting the acids with organic phosphazo compounds. The latter may be of the type RN=PNHR, where R is an aliphatic, alicyclic, aromatic or heterocyclic radicle which may be substituted, e.g. by halogen or an alkyl, alkoxy, sulpho, additional amino or substituted amino grop but not by a carboxylic group or an o- or p-nitro group. The cyclic dimers of phosphazo compounds of the above type may also be used, or alternatively the phosphazo compounds may be taken in the form of the crude reaction product obtained from phosphorus trichloride and the corresponding primary amine. Mono- or di-carboxylic acids may be treated with the phosphazo compounds, and in the latter case the product may be an N-substituted mono- or di-amide or an N-substituted imide. The reaction may be effected at atmospheric or raised temperature, preferably in the presence of a solvent; a number of solvents are specified. Examples are given of the preparation of: (1) N-octylpropionamide from propionic acid and a reaction product of phosphorus trichloride with octylamine; (2) p-nitrobenzanilide from p-nitrobenzoic acid and phenyl phosphazoanilide, obtained from phosphorus trichloride and aniline; (3) N-butylbenzamide from benzoic acid and a reaction product of phosphorus trichloride with butylamine; (4) N-cyclohexylbenzamide from benzoic acid and a reaction product of phosphorus trichloride with cyclohexylamine; (5) nicotinic acid anilide from nicotinic acid and phenyl phosphazoanilide; (6) N-benzoylsulphanilic acid from benzoic acid and a reaction product of phosphorus trichloride with sulphanilio acid; (7) N : N1-diphenylmalonamide from malonic acid and phenyl phosphazoanilide. Reference is made also to the use of the phosphazo compounds obtainable from methylamine, ethylamine, propylamine, amylamine, dodecylamine, stearylamine, cyclopentylamine, naphthylamines, and amino derivatives of pyridine, quinoline, carbazole and diphenylene oxide. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2603660-A |
| priorityDate | 1945-04-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 68.