http://rdf.ncbi.nlm.nih.gov/pubchem/patent/TW-553940-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_315ae544538aaeac6d1f4eed6754e4bb |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01D- http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01N43-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D249-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A01N- |
| filingDate | 1999-01-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2003-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bb91ff7616d24c0ac3c8c96d44bd8b27 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f62a7cd66c0ead8bd0d60b6ea9c20329 |
| publicationDate | 2003-09-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | TW-553940-B |
| titleOfInvention | Process for the preparation of a triazolinone herbicide |
| abstract | A process for preparing an alkyl alpha, 2-dichloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-2,4-substituted-benzene-propanoate herbicide, by reacting an alkyl alpha-acetyl-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-2,4-disubstituted-benzene-propanoate, Intermediate D, first with sodium hypochlorite, then with a base, and recovering the herbicide. Intermediate D is prepared by reacting a 1-(2,4-disubstituted-5-halophenyl)-4-difluoromethyl-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazole, Intermediate B, with an alkyl alkanoate in the presence of a palladium catalyst and a tertiary amine. Intermediate B is prepared by reacting a 1-(2,4-disubstituted-phenyl)-4-difluoromethyl-4,5-dihydro-3-methyl-5-oxo-1H-1,2,4-triazole with a halogenating agent in the presence of an acid. The 2,4-substituents are independently selected from halo, alkyl, cycloalkyl, alkoxy, nitro, or hetercyclyl. |
| priorityDate | 1997-10-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 90.