http://rdf.ncbi.nlm.nih.gov/pubchem/patent/IT-1026755-B
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_47becd0bad1e8c65826be1edac09d306 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07F- |
| filingDate | 1974-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1978-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_79420661f4769eaa4e2afd10e021338c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b9e53d87627dad0d71f1a43373d5ffc5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f08219edb75680c2562cd7f59409ee66 |
| publicationDate | 1978-10-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | IT-1026755-B |
| titleOfInvention | CONTINUOUSLY IMPROVED PREPARATION OF NO. MONOMETHYLAMIDE OF THE ACID OR C. DIMETHYLDITHIOPHOSPHORYL CETIC |
| abstract | O,O-dimethyl-dithiophosphoryl acetic acid N-mono-methylamide (I) is prepd. by reacting phosphorosulphides with methanol in toluene to give O,O-dimethyl-dithiophosphoric acid (II) which is reacted with aq. alkali metal hydroxides or -carbonates to form the salts. The soln. is then reacted with 2- chloroacetic acid methyl ester (III) at pH 5.5-7 and 80-100 degrees for 10-15 min. and the product is purified by steam-distn. at 60-65 degrees at a reduced pressure of 140-150 mm Hg, the vol. ratio steam : ester being (0-25:1). The methylester obtained (IV) is reacted with aq. methylamine at 0-10 degrees C in the presence of a surface-active agent whereby a part of the slurry contg. (I) is refluxed back to the reactor. (I) is a known cpd. with insecticidal activity. The process may be continuous giving high yields of very high purity. |
| priorityDate | 1974-12-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.