http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105330598-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-64 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-64 |
| filingDate | 2015-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-11-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105330598-B |
| titleOfInvention | A kind of preparation method of pirfenidone |
| abstract | The present invention relates to a kind of preparation method of pirfenidone.This method is using 2 allyl acetonitriles under acid catalyst effect, reacts the butadiene (II) of 4 cyano group of generation 2 methyl, 1 alkoxy 1,3 with ortho-formate, obtains pirfenidone with aniline condensation, then hydrolysis again.The present invention is raw materials used cheap and easy to get, and technological process is short, easy to operate, green, and simultaneous reactions are selectively good, and product yield and purity are high. |
| priorityDate | 2015-12-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 56.