http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0504182-B1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B25-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D215-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B25-00 |
| filingDate | 1990-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1994-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_205593c18fdc86db6aafde0fcaaf7cd9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e62d87db4f4737dcad68ad86f9a5786f |
| publicationDate | 1994-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0504182-B1 |
| titleOfInvention | Method of preparation of quinophthalone derivatives |
| abstract | Disclosed is the preparation of quinophthalone derivatives of the general formula (I), in which the grouping A makes up unsubstituted or substituted heterocyclic aromatic rings and the grouping B makes up an unsubstituted or substituted aromatic ring, by reacting a methyl-substituted heterocyclic compound of the general formula (II), with an anhydride of an aromatic dicarboxylic acid of the general formula (III) or with the corresponding free dicarboxylic acid (IIIa) in the presence of an acid plus an organic solvent, using as the organic solvent an alkyl ester of benzoic acid. |
| priorityDate | 1989-12-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 86.