http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106518755-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-61 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-61 |
| filingDate | 2016-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-04-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106518755-B |
| titleOfInvention | A kind of method synthesizing 2,3- dichloropyridine |
| abstract | The invention discloses a kind of methods for synthesizing 2,3- dichloropyridine.Specifically, synthetic method of the invention includes the following steps: 2,3,6- trichloropyridine, three (triphenylphosphine) carbonyl hydrogenation Rhs, triethylamine and solvent are added in autoclave, after closed ventilation, being passed through hydrogen to pressure is 50~100MPa, is reacted in 50~80 DEG C, until without until inhaling hydrogen phenomenon, vacuum distillation removes solvent, and normal pressure steam distillation after water is added to steam the mixture of 2,3- dichloropyridine and water, cooling filters and obtains 2,3- dichloropyridine.Due to use the biggish catalyst of volume, dechlorination reaction is selectively carried out in 6 chlorine atoms, so obtain purity and yield it is ideal 2,3- dichloropyridine, raw materials used to be easy to get relatively, operating process is simple and easy to do, great industrial applications prospect. |
| priorityDate | 2016-09-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.