http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113683527-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C249-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C249-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C251-48 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C251-60 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C249-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C249-04 |
| filingDate | 2021-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-03-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113683527-B |
| titleOfInvention | Preparation method of trifloxystrobin |
| abstract | The invention provides a preparation method of trifloxystrobin, which comprises the following steps of (1) reacting a raw material A with alkali at a first temperature; (2) reacting the substance obtained in the step (1) with the raw material B at a second temperature to generate trifloxystrobin; wherein the first temperature is higher than the second temperature, the raw material A is m-trifluoromethyl acetophenone oxime, and the raw material B is (E) -2- (2-bromomethylphenyl) -2-methoxyimino acetic acid methyl ester. According to the method, the raw material A is firstly reacted with strong alkali to generate an intermediate, and then the intermediate is reacted with the raw material B to generate the trifloxystrobin, so that the decomposition of the raw material B and the trifloxystrobin is avoided, and the yield of the trifloxystrobin is improved; in addition, the water generated in the reaction system is removed, and then the raw material B is added for reaction, so that the hydrolysis of trifloxystrobin is avoided, and the yield of the trifloxystrobin is further improved; the preparation method is simple in process, easy in solvent recovery, green and environment-friendly in preparation process and suitable for industrial production. |
| priorityDate | 2021-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.