http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-20030070608-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-20 |
| filingDate | 2002-01-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2003-08-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-20030070608-A |
| titleOfInvention | Method of Producing 1-Alkyl-3-Aryl-5-Difluoromethoxy-1H-Pyrazoles |
| abstract | The present invention relates to a process for the preparation of 1-alkyl-3-aryl-5-difluoromethoxy-1H-pyrazole of formula (I): In the first reaction step, the process of the present invention reacts the β-keto ester of formula II with hydrazine, and the obtained reaction product is subjected to chlorodifluoromethane and compound R 1 -L, wherein R 1 is C 1 -C 4 -alkyl, and L is a leaving group of the nucleophilic substitution reaction.n n n <Formula I>n n n n n n n n <Formula II>n n n n n n n n Wherein aryl is a mono- or polysubstituted phenyl ring and R 1 is as defined above. |
| priorityDate | 2001-01-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 107.