http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0439835-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-14 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-14 |
| filingDate | 1990-12-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_418f855268dfab3733472b9a0475c3ca |
| publicationDate | 1991-08-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0439835-A2 |
| titleOfInvention | Process for the preparation of pyrazolecarboxylic acid derivatives |
| abstract | Process for the preparation of pyrazolecarboxylic acid derivatives of the formula I. where Y = CH or N R¹ = independently of one another haloalkyl or halogen, R² = alkyl or alkynyl, R³ = alkali or alkaline earth metal, hydrogen, alkyl or alkoxyalkyl and n = 1 or 2 mean, by reacting a compound of formula II wherein Z represents chlorine or bromine, with an enol ether of formula III wherein R⁵ = alkyl, to a compound of formula IV and their subsequent aromatization to the compound I, characterized in that the reaction of the compound II with the compound III to the compound IV in a 2-phase system (aqueous / organic) in the presence of an inorganic base at temperatures of 40-100 ° C. and at Carried out pH values of 7-10 and then aromatized the compound IV formed without prior isolation under acidic conditions in a 2-phase system (aqueous / organic) to the compound of the formula I. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9219615-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-9219615-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0515041-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0515041-A3 |
| priorityDate | 1990-01-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 68.