http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CA-1205817-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e899199238cd97bdebfa84869ece733b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-3813 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D233-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-6506 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-78 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-6506 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F9-38 |
| filingDate | 1983-10-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1986-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97a319b4e79712c329c481650c095f9c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_744407645ea33e49476d45273d7e42a1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_18b1c737e3b14aa05977739fdbcc6604 |
| publicationDate | 1986-06-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CA-1205817-A |
| titleOfInvention | Method for preparation of n-phosphonomethylglycine |
| abstract | METHOD FOR PREPARATION OF N-PHOSPHONOMETHYLGLYCINE Abstract of the Invention Disclosed is a method for the preparation of N-phosphonomethyl-glycine which comprises the steps of (a) reacting hydantoin or a 3-sub-stituted hydantoin, a compound of the formula wherein R is selected from the group consisting of hydrogen, alkyl having from 1 to 10 carbon atoms, aryl having from 6 to 12 carbon atoms, alkyl-carbonyl wherein the alkyl group has from 1 to 10 carbon atoms, and aryl-carbonyl wherein the aryl group has from 6 to 12 carbon atoms, with para-formaldehyde in the presence of a low molecular weight carboxylic acid at a temperature and for a sufficient period of time to produce a mixture of intermediate products, including the 1-hydroxymethyl derivative of the starting hydantion (b) converting said 1-hydroxymethyl derivative to the 1-phosphonomethyl derivative by thereafter adding to the reaction mixture either (i) a substituted phosphorus compound selected from the group con-sisting of phosphorus trichloride, and phosphorus tribromide; or (ii) adding to the reaction mixture phosphorous acid and a anhydride selected from the group consisting acetic anhydride, propionic anhydride, butyric anhydride, or mixture thereof, and continuing said reaction at a tenpera-ture and for a sufficient period of time to cause completion of the reac-tion to form the 1-phosphonomethyl derivative; and (c) hydrolyzing the 1-phosphonomethylhydantoin product thus formed with a base selected from the group consisting of alkali metal or alkaline earth hydroxide, to pro-duce a salt of N-phosphonomethylglycine; and (d) neutralizing said salt with a strong acid to produce the end product, N-phosphonomethylglycine. |
| priorityDate | 1982-10-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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