http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2011920-A1
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C50-22 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C50-22 |
| filingDate | 1970-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1971-09-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2011920-A1 |
| titleOfInvention | Polynuclear quinones prepn |
| abstract | Quinone derivs. of formula (I): (where A is a mono- or polynuclear fused-on aryl residue opt. substd. by halogen or 1-4C alkyl or alkoxy; Ph is phenyl and R1 and R2 are H or 1-4C alkyl or alkoxy), which are dyes or intermediates for dyes or tetracycline derivs., are prepd. by subjecting a cpd. of formula (II): to reaction with salts or complexes of metals of sub-gp. 8 of the Periodic Table (e.g. tris-(triphenylphosphine)-rhodium chloride or PtCl4) in the presence of inert solvents or diluents and, if required, to thermal treatment. |
| priorityDate | 1970-03-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 25.