http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S5959647-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-333 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B55-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-00 |
| filingDate | 1982-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_719b9499e69b3427d8cc79d865715645 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d13a5591e9db3723950380fefc0c5835 |
| publicationDate | 1984-04-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S5959647-A |
| titleOfInvention | Racemization of optically active 2,2-dimethylcyclo- propane-1-carboxylic acid ester |
| abstract | PURPOSE: To obtain an optically active compound by racemizing an optically active 2,2-dimethylcyclopropane-1-carboxylic acid ester using an alkali metal alcoholate as a catalyst at a specific temperature range. n CONSTITUTION: The optically active compound of formula (R is alkyl) is treated at 20W200°C (preferably 50W170°C) using an alkali metal alcoholate as a catalyst to obtain a racemic compound. The catalyst is e.g. sodium methylate, sodium ethylate, potassium t-butylate, etc., and the amount of the catalyst is preferably 1/100W1/2mol per 1mol of the ester to be treated. The enantiomer left after the optical resolution can be economically racemized by the above process, and an effective optically active compound can be prepared again from the racemized compound. n USE: Intermediate of pharmaceuticals and agricultural chemicals. n COPYRIGHT: (C)1984,JPO&Japio |
| priorityDate | 1982-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 31.