http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110092746-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-73 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-73 |
| filingDate | 2018-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110092746-B |
| titleOfInvention | Simple preparation method of 2-amino-5-halogenated pyridine |
| abstract | The present invention providesA process for the preparation of 2-amino-5-halopyridine comprising the steps of: 4-cyano-1-butyne and halogen simple substance X in solvent under the catalysis of acid catalyst 2 4,4,5, 5-tetrahalogenated n-valeronitrile is obtained through addition reaction; 4,4,5, 5-tetrahalogenated n-valeronitrile and ammonia are cyclized by pyridine to obtain 2-amino-5-halogenated pyridine. The method has the advantages of mild preparation conditions, safety, environmental protection, low cost, high selectivity, few byproducts and high product yield, and is suitable for industrial production. |
| priorityDate | 2018-01-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 82.