http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S55122760-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_596023cd3f1a2e4ced3f8094c3271104 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-86 |
| filingDate | 1979-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ce4ad47444d69f3da40c0f7d447446e |
| publicationDate | 1980-09-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S55122760-A |
| titleOfInvention | Production of carbazole compound |
| abstract | PURPOSE: Readily available biphenyl is cyclized to give 2 and/or 2'-tert.- butylcarbazole, which is treated with an aromatic hydrocarbon in the presence of a Lewis acid to produce readily (4-substituted) carbazole. n CONSTITUTION: The cyclization of a compound of formula I (R is H, lower alkyl; R 1 and R 2 are tert.-butyl, one of which may be H; one of Z is nitro and the other is H) is conducted in the presence of a phosphite ester to give a compound of formula II, which is treated with an aromatic hydrocarbon in the presence of a Lewis acid such as aluminum trichloride to give the objective compound of formula III. The aromatic hydrocarbon used in transalkylation reaction of the compound of formula II is, e.g., toluene, xylene, biphenyl, and others, preferably benzene. The reaction is generaly conducted at 50W60°C and finishes within several hours. n USE: Synthetic intermediate of N-vinyl carbazole. n COPYRIGHT: (C)1980,JPO&Japio |
| priorityDate | 1979-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 30.