http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108191909-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-301 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-30 |
| filingDate | 2018-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-05-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108191909-B |
| titleOfInvention | Process for preparing glufosinate-ammonium acid by hydrogenation method |
| abstract | The invention discloses a process for preparing precursor glufosinate-ammonium acid of glufosinate-ammonium by catalytic hydrogenation, which comprises the steps of firstly, under the action of an acid-binding agent and a dehydrating agent, reacting N-acetamidomalonic acid monoethyl ester with 2- [ ethoxy (methyl) phosphono ] acetaldehyde to generate an intermediate 2-acetamido-4- [ ethoxy (methyl) phosphono ] butyl-2-ethyl enoate; then separating and purifying the intermediate, using alcohols as a solvent, hydrogenating under the catalysis of a hydrogenation catalyst to obtain a product 2-acetamido-4- [ ethoxy (methyl) phosphonyl ] ethyl butyrate, wherein the two-step yield can reach more than 85 percent, and finally deprotecting by concentrated hydrochloric acid and dehydrochloric acid to obtain glufosinate-ammonium. The invention has the characteristics of simple reaction and post-treatment operation, high yield, recyclable hydrogenation catalyst and the like, and has very wide industrial prospect. |
| priorityDate | 2018-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 96.