http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-104447597-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D253-075 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-35 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D253-075 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-30 |
| filingDate | 2014-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-104447597-B |
| titleOfInvention | A kind of preparation method of diclazuril |
| abstract | The present invention relates to a kind of preparation methods of veterinary drug diclazuril.The synthesis of document report diclazuril is with 2,6 dichloro paranitroanilinum or 3, and 4,5 trichloronitrobenzenes are starting material, and common intermediate 3 is made by reactions such as diazotising, substitution, reduction.Prior art step is more, and whole yield is not high so that diclazuril raw material and its preparation hold at high price.The present invention provides a kind of synthesis technologies of diclazuril, specifically intermediate 3 is reacted with sodium nitrite is made intermediate 4 by reduction, can be obtained product by cyclization, ring expansion, column chromatography means are not used in route, the technique shortens reaction step, is suitble to industrialized production. |
| priorityDate | 2014-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 77.