http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103387540-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D231-20 |
| filingDate | 2012-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2015-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-10-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103387540-B |
| titleOfInvention | A kind of method for preparing pyraclostrobin by salt-forming method |
| abstract | The invention discloses a method for preparing pyraclostrobin by a salt-forming method, and the reaction formula is as follows: In the formula: the base is selected from MH, MNH 2 , MOR 1 , M 2 CO 3 or MHCO 3 , M is selected from Li, Na or K; R 1 is selected from H, C 1 -C 6 alkyl; R 2 is leaving A group selected from fluorine, chlorine, bromine, iodine, C 1 -C 6 alkylsulfonic acid group, unsubstituted or substituted phenylsulfonic acid group. The compound represented by formula IV reacts with a base in a suitable solvent to prepare a salt, that is, the compound represented by formula V, and then reacts with the compound represented by formula VI in a suitable solvent to prepare pyraclostrobin (III). The method for preparing pyraclostrobin by the salt-forming method of the present invention reduces the generation of carbon alkylation by-products and other impurities, and improves the yield and content of oxyalkylation products, i.e. pyraclostrobin; the method has mild reaction conditions, The post-processing method is simple and easy, economical and effective, and easy for industrial production. |
| priorityDate | 2012-05-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 28.