http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108929264-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_2109c08af76da5c1521263e799f1440d http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5a670f6baeba6f2c1f6bd2dee97ebb6e |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D213-74 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D213-74 |
| filingDate | 2018-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a05d2d317e454b4b0e6e393e0d879dad http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7e8a7e32cec51021c8efc22986d764da |
| publicationDate | 2018-12-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108929264-A |
| titleOfInvention | A kind of preparation method of fluazinam |
| abstract | The invention discloses a preparation method of fluazinam. The method comprises the steps of: making 2-amino-3-chloro-5-trifluoromethylpyridine and 2,4-dichloro-3,5-dinitrobenzotrifluoride in the first organic solvent, alkali and catalyst In the presence of a reaction at a specified reaction temperature to obtain a reaction mixture; obtain purified 3-chloro-N-(3-chloro-5-trifluoromethyl-2-pyridine as a reaction product from the reaction mixture by post-processing base)-α,α,α-trifluoro-2,6-dinitro-p-toluidine; wherein the catalyst is a phase transfer catalyst. By adding a phase transfer catalyst and lowering the reaction temperature in the reaction, the selectivity of the reaction is improved, and the occurrence of side reactions of hydrolysis is suppressed, thereby increasing the yield of the product. Further, in the post-treatment of the product, the alkali and the generated salt are removed by filtration and neutralization without water washing, and the alkali can be reused, reducing the generation of waste water and the waste of resources. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110143916-A |
| priorityDate | 2018-09-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 55.