http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113024505-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D333-36 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D333-36 |
| filingDate | 2019-12-25^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-03-01^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-03-01^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113024505-B |
| titleOfInvention | Preparation method of dimethenamid |
| abstract | The invention relates to the field of herbicides, and discloses a preparation method of dimethenamid, which comprises the following steps: 1) in the presence of an acid, a knot represented by the formula (1)Carrying out a first contact reaction on the compound with the structure and (2S) -1-hydroxypropyl-2-amine to obtain a compound with the structure shown in a formula (2); 2) in the presence of a first base, carrying out a second contact reaction on the compound with the structure shown in the formula (2) and a methyl etherification reagent to obtain a compound with the structure shown in the formula (3); 3) and (3) in the presence of a second base, carrying out a third contact reaction on the compound with the structure shown in the formula (3) and chloroacetyl chloride to obtain the dimethenamid. The method has the advantages of mild reaction conditions, high yield and simple and convenient operation, and is very suitable for industrial preparation. |
| priorityDate | 2019-12-25^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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