http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-966544-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8857d9285f4a393618523d052bf765df |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-295 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-295 |
| filingDate | 1960-11-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1964-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-966544-A |
| titleOfInvention | Manufacture of pimelic acid |
| abstract | Pimelic acid is prepared either by reacting a mono-chlorocyclohexane carboxylic acid with aqueous alkali metal hydroxide between 250 DEG and 450 DEG C. and then acidifying the salt thus obtained to liberate the free acid or by dehydro-halogenating alpha-chlorocyclohexanecarboxylic acid with an alkali metal hydroxide at 0-110 DEG C. to obtain an alkali metal 1-cyclohexene-1-carboxylate, reacting this product with aqueous alkali metal hydroxide between 250-450 DEG C. and then acidifying the salt to liberate the free acid. The mono-chlorocyclohexane carboxylic acid is preferably alpha-chlorocyclohexane carboxylic acid. This alpha acid may be prepared by chlorinating cyclohexane carboxylic acid with sufficient chlorinating agent to monochlorinate 20% of the acid in a non-aqueous phase from 0-150 DEG C. with a chloride, oxyhalide, oxide or oxygen acid of phosphorus, antimony or arsenic as catalyst. Specified chlorinating agents are chlorine, sulphuryl chloride, phosphorus pentachloride, N-chlorosuccinimide, N-chlorourea and dichlorohydantoin. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102675088-A |
| priorityDate | 1959-11-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 39.