http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2021009532-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b5bd4471572e567e4aafab91b7dfb97c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D239-52 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D239-52 |
| filingDate | 2018-05-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9ec7ef319ba492e018a2295c1ef95a36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_90275ae5ab095f83c0927a3865260efa http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ea3229a7184201159e5cccd1f978f3d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_16a8f64bdf41688e9bd21bcfbda65a91 |
| publicationDate | 2021-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-2021009532-A1 |
| titleOfInvention | Preparation method for azoxystrobin and intermediate thereof |
| abstract | The present invention relates to the preparation field of azoxystrobin, and discloses a preparation method for a compound represented by formula (I). The method comprises the following steps: (1) a compound represented by formula (II) is hydrolyzed in a solvent under acidic conditions to obtain a compound represented by formula (III); and (2) the compound represented by formula (III) is reacted with a base and a methylating agent to obtain the compound represented by formula (I); in the formula, R 3 is hydrogen or C 1 -C 4 alkyl, and R 4 is C 1 -C 4 alkyl. The process for preparing azoxystrobin of the present invention not only successfully replaces trimethyl orthoformate and reduces the raw material cost, but also has high total reaction yield, and is suitable for industrial large-scale production. Experiments have proven that the yield of the prepared azoxystrobin can reach 95%. |
| priorityDate | 2018-03-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 129.