http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107118224-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D505-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D505-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D505-18 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D505-06 |
| filingDate | 2017-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107118224-B |
| titleOfInvention | A kind of preparation method of oxygen cephalosporin nucleus intermediate, its solvated compounds and preparation method thereof |
| abstract | The invention discloses a kind of preparation method of oxygen cephalosporin nucleus intermediate, its solvated compounds and preparation methods.The present invention prepares the oxygen cephalosporin nucleus intermediate using chlorination, selects specific catalyst, and being not required to additionally to add organic base can be in fast reaction, and reaction temperature is low, and by-product is few, products obtained therefrom quality height.The invention further relates to the intermediates to crystallize in the solution containing acetonitrile, and a kind of new solvated compounds can be formed with acetonitrile, and crystalline particle is big, and stability is good, and convenient for filtering and storage, product yield is high, is suitble to industrialized production. |
| priorityDate | 2017-06-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 195.