http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4417056-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_16890954fa97fa1ea88523e23b283152 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D235-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07B61-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D235-18 |
| filingDate | 1982-03-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1983-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_18a224cbef18fc5b8790cd2dbd7ef697 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25069b0f469d4545b90f3c4e646fc4f8 |
| publicationDate | 1983-11-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | US-4417056-A |
| titleOfInvention | Process for preparing 2-(4-aminophenyl)-5-amino-benzimidazole and substituted derivatives |
| abstract | The invention concerns a process for the preparation of 2-(4-aminophenyl)-5-aminobenzimidazole and substituted derivatives by catalytic cycloreduction of starting material N-(4-nitrobenzoyl)-2,4-dinitroaniline or a substituted derivative by hydrogen gas. According to the invention, the starting material is treated in suspension in an aqueous solution of hydrochloric or phosphoric acid, the content (C) of starting material in said suspension ranging from 0.15 to 1.5 mole per liter and the molar ratio (A): acid/starting material being from 2 to 20. The process is carried out at a hydrogen pressure from 5 to 100 bars and a temperature (T) from 20 DEG to 150 DEG C. selected so that the product TxAxC is equal to or greater than 25. There is thereby obtained a product of excellent purity with very good yields. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102603648-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013019579-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102603648-A |
| priorityDate | 1981-03-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 46.