http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101277923-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b828305495e1cdb63947a3a18aa633d1 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-582 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C211-55 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-90 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C209-38 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C209-26 |
| filingDate | 2006-05-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2008-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-101277923-A |
| titleOfInvention | Method for preparing 4-aminodiphenylamine |
| abstract | The present invention relates to a method for preparing 4-aminodiphenylamine comprising the steps of reacting carbanilide and nitrobenzene in an adequate solvent in the presence of an appropriate organic base or a mixture of an organic base and an inorganic base and subsequently reducing the reaction product, or a 4-aminodiphenylamine intermediate, without separation from the reaction mixture, in the presence of an appropriate catalyst and hydrogen gas. Because the method of the present invention uses carbanilide as starting material, which reacts directly with nitrobenzene with high reactivity and selectivity, generation of by-products such as phenazine and 2-nitrodiphenylamine can be reduced and the 4-aminodiphenylamine intermediate can be prepared with good selectivity and production yield. Also, because a recyclable organic base is used, amount of wasted material can be minimized and 4-aminodiphenylamine, or the final product, can be prepared efficiently, without the separation of 4-aminodiphenylamine intermediate for the subsequent reduction process. In addition, in comparison with conventional preparation methods of 4-aminodiphenylamine, generation of harmful wastes can be significantly reduced and environment-damaging corrosive materials are not generated. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110624602-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011147308-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102372639-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109232275-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109232275-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101735074-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102259029-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-102259029-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9029603-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EA-025024-B1 |
| priorityDate | 2005-05-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 101.