http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110540546-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D513-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D513-04 |
| filingDate | 2019-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-11-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110540546-B |
| titleOfInvention | Production process of tricyclazole |
| abstract | The invention provides a production process of tricyclazole, belonging to the field of pesticide production. The production process of tricyclazole solves the problems of low utilization rate of formic acid and the like in the prior art, and comprises the following steps: s01: adding 30-35% of formic acid for reaction into 4-methyl-2-hydrazinobenzothiazole, heating to 105-; s02: after the reflux is finished, carrying out reduced pressure distillation, evaporating and recovering formic acid, wherein the temperature of the reduced pressure distillation is 130-160 ℃, dropwise adding water into the residue of the reduced pressure distillation at the speed of 30-60 drops/min, cooling and crystallizing after the dropwise adding, wherein the temperature of the cooled and crystallized product is-10-40 ℃, filtering, and drying the filter cake obtained by filtering at 50-100 ℃ to obtain a crude product of tricyclazole; and (4) refining the crude tricyclazole obtained in the step (S02) by using an ethyl acetate-ethanol mixed solvent to obtain refined tricyclazole. The tricyclazole has high yield. |
| priorityDate | 2019-10-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.