http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S59193842-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-703 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C203-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-707 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B55-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-64 |
| filingDate | 1983-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3fcc4f290166c52c07216159b23dcec4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8619dddf9dff61302ad576a03cb75078 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_22ca0bcbc66317eca2df0c4c82cc89bc |
| publicationDate | 1984-11-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S59193842-A |
| titleOfInvention | Production of optically active cyclopentenolone |
| abstract | PURPOSE: An optically active cyclopentenolone useful as an intermediate of an agricultural chemical (pyrethroid insecticide) is led to a nitric acid ester, then the ester is hydrolyzed under neutral or acidic conditions to cause high-efficiency and low-cost rearrangement to the corresponding enantiomer. n CONSTITUTION: An optically active compound of formula I (R 1 is H, lower alkyl; R 2 is lower alkyl, lower alkenyl, lower alkinyl) is nitrated to give an optically active nitric acid ester of formula II. Then, the resultant ester is hydrolyzed under neutral to acidic conditions, preferably at 70W100°C to give a compound of formula I in which the asymmetric center is inverted. The resultant compound is used as an alcohol component for the above-cited insecticide and the (S)-isomer of the insecticide is more active a few times than the racemic and (R)-isomers. Thus, the (R)-isomer of the formula I , which is formed on the production of the (S)-isomer, as a by-product, can be efficiently utilized by the isomerization. n COPYRIGHT: (C)1984,JPO&Japio |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S59216845-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0465820-B2 |
| priorityDate | 1983-04-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID702 http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419538410 |
Total number of triples: 26.