http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DD-268935-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_13356924224cc58b2e030fbc78804d0f |
| filingDate | 1983-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7330e7d2c2f20abf5eb9079be726835c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_274c4818efa71307c34facf40d64acca http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_92b73a6a5c8dd6cc9a1e4ed45f798b47 |
| publicationDate | 1989-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DD-268935-A1 |
| titleOfInvention | PROCESS FOR THE PREPARATION OF N-ARYLCARBAMATES |
| abstract | The aim of the invention is a further improved process for the economical production of N-aryl carbamates which works without phosgene and which extracts N-aryl carbamates from the nitroaromatics in a one-stage process in the presence of more efficient catalysts based on sulfur and sodium and / or potassium vanadates. Where the N-aryl carbamates are formed in good selectivity largely independent of the alcohol used, if the total amount of sulfur is only a maximum of 10 mol% per nitro group of the nitroaromatic used. For this purpose, nitroaromatics are reacted with alcohols and carbon monoxide under largely anhydrous conditions in the presence of sulfur and / or sulfur compounds and sodium and / or potassium vanadate in combination with quaternary ammonium salts. |
| priorityDate | 1983-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 99.