http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IE-781441-L
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_70ec63d39d6704bacc5c7068c93ded43 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-743 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-74 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01N53-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01N- |
| filingDate | 1978-07-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1979-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | IE-781441-L |
| titleOfInvention | Preparation of esters of cyclopropane carboxylic acids |
| abstract | Compounds of the general formula <IMAGE> in which R<1> and R<2> in each case stand for an alkyl group having 1 to 4 carbon atoms or together form an alkylene group having up to 5 carbon atoms, X<1> and X<2> in each case stand for a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or for a halogen atom or, with one another, form an alkylene group having up to 5 carbon atoms or X<1> denotes a hydrogen atom and X<2> is a monohalovinyl, dihalovinyl or dimethylvinyl group and R stands for a methyl or ethyl group, are prepared. A procedure is used in which a cyclopropanenitrile of the general formula <IMAGE> is reacted with methanol or ethanol under substantially anhydrous conditions at a temperature from 80 to 200 DEG C and in the presence of a mineral acid as a reaction catalyst and of a scavenging agent for the ammonia formed during the reaction. The compounds of the formula I are intermediates for the preparation of synthetic pyrethroids.n[GB1599888A] |
| priorityDate | 1977-07-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 32.