http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-19739489-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e7ee05e5af286e73261ac75cee30782d |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C251-72 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D231-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-06 |
| filingDate | 1997-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_64e51ebf4f352da62fe3f5e0ddc1b9fe |
| publicationDate | 1999-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-19739489-A1 |
| titleOfInvention | Process for the preparation of 1-phenylpyrazoline-3-carboxylic acid derivatives |
| abstract | The present invention relates to a method for preparing 1-phenylpyrrazolin-3-carboxylic acid derivatives of the general formula (III), wherein said method comprises reacting hydrazones of the general formula (I) with olefins of the general formula (II) using a base as a catalyst. In the above-mentioned formulae, Ph is an optionally substituted phenyl, R<1> is hydrogen or alkyl, R<2> and R<3> are independently hydrogen, halogen, cyano, an optionally substituted organic residue or R<2> and R<3> form together with the carbon atom bearing them a saturated or partially saturated cyclic compound comprising 5 or 6 atoms. X is amino, hydroxy, alkoxy, cycloalkoxy, alkylamino, dialkylamino, alkyloxyalkyloxy, trialkylsilyloxy or trialkylsilylmethyloxy and Y is chlorine or bromine. This reaction is carried out in a two-phase system comprising an organic phase and an aqueous phase using a sterically hindered amine and an optional other base. The 1-phenylpyrrazolin-3-carboxylic acid derivatives of the present invention can be used as phyto-protective agents, i.e. as agents for protecting useful crops in agriculture or silviculture against undesired effects due to the application of herbicides. |
| priorityDate | 1997-09-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 53.