| 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/B01J27-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-353
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B31-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-747
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C61-37
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B55-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-30 |
| filingDate |
1987-06-30-04:00^^<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
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf047638fe93365edfef7e3160954065
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_918dcdf1dd46ce3883fad9a32b7f2fa5 |
| publicationDate |
1989-01-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-S646234-A |
| titleOfInvention |
Racemization of optically active chrysanthemum-monocarboxylic acids |
| abstract |
PURPOSE:To proceed racemization efficiently and to obtain racemic modification rich in trans form suitable for a raw material for pyrethroid type insecticides, by treating an optically active chrysanthemum-monocarboxylic acid with hydrogen bromide especially in the presence of a peroxide or an azo compound. CONSTITUTION:An optically active chrysanthemum-monocarboxylic acid [especially effective for use (-) form carboxylic acid or carboxylic acid rich in (-) form] shown by the formula (R is H, 1-20C alkyl, cycloalkyl or aralkyl; *is asymmetric carbon) is treated with hydrogen bromide or further preferably treated with hydrogen bromide in the presence of a peroxide (e.g. hydroperoxide) or an azo compound (e.g. azonitrile) to give an optically active chrysanthemum- monocarboxylic acid [especially compound of trans form rich in (+) form)]. Readily handleable hydrogen bromide is usable and this process is industrial and advantageous. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S6425743-A |
| priorityDate |
1986-09-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |