http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H04182471-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_03d0f52bb4069f8a19d70dcfb697c67a |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D403-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C7-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D241-44 |
| filingDate | 1990-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_dd9579b3c62f1cbb7c0e08e0a5017d32 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f885ea5419a5a2b10fd4158db0e9c4d3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cedb723b402ade5fce94ab713b04e295 |
| publicationDate | 1992-06-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H04182471-A |
| titleOfInvention | 1,2-dihydroquinoxalin-2-ones |
| abstract | NEW MATERIAL:A compound expressed by formula I (R 1 is carbamoyl or nitrogen-containing 5-membered heterocyclic ring group; R 2 is aromatic group; R 3 and R 4 are alkyl; R 5 is alkyl, alkoxy or acylamino; n is 0-2). n USE: Yellow dye used as a dye for photograph, dye for ink jet, dye for printing, dye for filter, etc., and having high molar absorption coefficient and sharp absorption characteristics. n PREPARATION: A compound expressed by formula II is reacted with an oxidizing agent (e.g. ammonium persulfate) and then subjected to coupling reaction with a compound expressed by formula III and immediately subjected to ring- closing reaction to provide the compound expressed by formula I. The above-- mentioned reaction is carried out in the presence of a base (e.g. sodium carbonate) in a solvent such as N,N-dimethylformamide. n COPYRIGHT: (C)1992,JPO&Japio |
| priorityDate | 1990-11-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 26.