http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5047586-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c24684033fba97d1ad845ce453a57e3 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C233-43 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C231-10 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C231-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-755 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C233-43 |
| filingDate | 1990-08-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1991-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_50f59abef689380a53b3380d067238b0 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73773a233d10904e276f3c538c14e822 |
| publicationDate | 1991-09-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-5047586-A |
| titleOfInvention | Process for the preparation of 4-acylamino-2-aminoalkoxybenzenes |
| abstract | A process for the preparation of 4-acylamino-2-aminoalkoxybenzenes of the general formula (1) ##STR1## in which R denotes an alkyl-C 1 -C 6 - or alkoxy-C 1 -C 4 -alkylene-C 1 -C 4 group and R' denotes a methyl or ethyl group, by pumping a solution or suspension of a 2,4-dinitroalkoxybenzene of the general formula (2) ##STR2## in which R has the abovementioned meaning, in a butyl acetate into a stirred suspension of a nickel catalyst on a kieselguhr carrier in butyl acetate, which has been initially introduced into an autoclave, at a hydrogen pressure of about 5 to about 50 bar, and a temperature of about 60° to about 120° C., at a rate which corresponds to the rate of hydrogenation of 2,4-dinitroalkoxybenzene to 2,4-diaminoalkoxybenzene, dehydrating the reduction solution by azeotropic distillation, after the hydrogenation, and acylating the resulting 2,4-diaminoalkoxybenzene with about 0.90 to 0.99 mole of the anhydride of an alkylmonocarboxylic acid having 2 to 3 carbon atoms, relative to 1 mole of 2,4-diaminoalkoxybenzene, at about -5° to about +15° C. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103626665-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103626665-B |
| priorityDate | 1988-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 143.