http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2006508024-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-22 |
| classificationIPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C69-65 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-35 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-30 |
| filingDate | 2003-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2006-03-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2006508024-A |
| titleOfInvention | Improved process for the preparation of 2,2-dichloro- or dibromophenylacetic acid alkyl esters |
| abstract | In an improved method for producing 2,2-dichloro- or -dibromophenylacetic acid alkyl ester represented by the formula (I) described in the specification, the compound represented by the formula (II) described in the specification is used. 2,2-dichloro- or -dibromophenylacetonitrile prepared with 0.8 to 2 mol of water per mol of nitrile of formula (II), 1 to 8 mol of R1OH (III) per mol of nitrile of formula (II) Reaction in the alcohol represented in the presence of 1 to 3 mol of HCl or HBr per mol of nitrile of the formula (II), optionally in the presence of a solvent which is inert under the reaction conditions, The corresponding 2,2-dichloro- or -dibromophenylacetic acid alkyl ester of the formula (I) is obtained, in which the reaction temperature in the first stage of the reaction is 30-60 ° C. and in the second stage 60-100 ° C. Characterized in that, after completion of the conversion, the reaction mixture is cooled to 20-40 ° C., diluted with water and the corresponding 2,2-dichloro- or dibromophenylacetic acid alkyl ester of the formula (I) is isolated The above method. |
| priorityDate | 2002-04-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 86.