http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-1304877-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D249-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D249-18 |
| filingDate | 1970-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1973-01-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-1304877-A |
| abstract | 1304877 2 - [4<SP>1</SP> - (Benzoxazolyl - 2<SP>11</SP>)-styryl] 5-arylbenztriazoles. BAYER AG 3 Nov 1970 [3 Nov 1969] 52211/70 Heading C2C [Also in Divisions C3 and D1] The invention comprises 2-[4<SP>1</SP>-(benzoxazolyl- 2<SP>11</SP>) - styryl] - 5 - aryl - benztriazoles of the general formula in which R 1 represents hydrogen, halogen, alkyl, alkenyl, alkoxy or aryl and R 2 , R 3 and R 4 independently represent hydrogen, halogen, alkyl, alkenyl, alkoxy, cycloalkyl, aralkyl, aryl or nitrile, or R 2 and R 3 conjointly form a sixmembered aromatic ring. They may be prepared by reacting a 2-p-carboxystyryl-5-phenylbenztriazole of the general formula in which Z is hydroxyl, halogen or alkoxy with an o-aminophenol of general formula and cyclizing the reaction product with a dehydrating agent or by reacting a 5-arylbenztriazolyl-2-acetic acid of general formula with a 2-(41-formylphenyl)-benzoxazole of the general formula in the presence of a condensation catalyst. The 2 - p - carboxy - styryl - 5 - phenylbenztriazole starting material may be prepared by reacting a 5 - phenylbenztriazolyl - 2 - acetic acid with 4 - carboxybenzaldehyde in the presence of piperidine. The compounds of the invention may be used as optical brightening agents. |
| priorityDate | 1969-11-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.