| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_79751aeaa9923745648e5ae7d9c35782 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D249-20 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D249-20 |
| filingDate |
1977-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1979-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c89edf19cd0ef51eac8f7268b7bdb0b3 |
| publicationDate |
1979-02-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4141903-A |
| titleOfInvention |
Process for the production of 2-aryl-2H-benzotriazoles |
| abstract |
A process for the production of 2-aryl-2H-benzotriazoles comprises reducing and cyclizing the corresponding o-nitroazobenzenes with carbon monoxide at a temperature in the range of about 20 DEG C. to about 150 DEG C. and at a pressure in the range of about 15 psia (1 atmosphere) to about 1000 psia (66 atmospheres) in an alkaline medium at a pH over 10 in the presence of a copper-amine complex catalyst. High yields of pure product are obtained with a concomitant reduction of undesired by-products and a reduction in effluent pollution problems. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-2006122293-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4770667-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5683861-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-8402365-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0697481-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6174854-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6815550-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0112120-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0112120-A3
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5360559-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6605727-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6566507-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4956406-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-8101473-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4668235-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5097041-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6398982-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5739348-A |
| priorityDate |
1977-08-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |