http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H02204473-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_0efa077d881a96aeb1e29b21ef1bbb58 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B1-503 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C225-36 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C221-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C221-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B1-503 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C225-36 |
| filingDate | 1989-12-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_158a730ea1e67f24fb45257343e4bde7 |
| publicationDate | 1990-08-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H02204473-A |
| titleOfInvention | Production of 1-amino-2-bromo-4-hydroxy anthraquinone |
| abstract | PURPOSE: To economically obtain the subject compd. of an intermediate useful for producing solid anthraquinone in a high purity and in a high yield, by brominating 1-amino-4-hydroxy-anthraquinone in an inert neutral org liquid. n CONSTITUTION: 1-Amino-4-hydroxy-anthraquinone represented by formula I is brominated in an inert neutral org. liquid (pref., nitrobenzene, 0- dichlorobenzene, trichlorobenzene or methyl benzoate) by using a brominating agent (e.g.; phosphorus tribromide, phosphoryl bromide, phsphorus pentabromide, especially, elemental bromine) to obtain A compd. represented by formula II. The reaction is performed at a temp. of 100-180°C, especially, 120-140°C. It is pref. to use the inert org. liquid in an amt. of 4-12 kg, especially, 6-9 kg with respect to 1 kg of the compd. represented by formula I. The brominating agent is generally used in a stoichiometric amt. especially, in a 20 equivalent % excessive amt. n COPYRIGHT: (C)1990,JPO |
| priorityDate | 1988-12-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 40.