| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3e9445e5e3626f36e932c6451a928250 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C50-24 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C67-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C66-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C313-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C50-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C319-12
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C46-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-22 |
| filingDate |
1983-11-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
1985-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9793432885662a441393babb45779322
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_0b5711f95287464434b6304cafd98e3d |
| publicationDate |
1985-09-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-4543214-A |
| titleOfInvention |
Process for the preparation of bromoanthraquinones |
| abstract |
A process for the preparation of pure bromoanthraquinones by denitrobrominating corresponding nitroanthraquinones is described. The process comprises treating nitroanthraquinones of the formula I ##STR1## wherein X is hydroxy, mercapto, carboxy or halogen and m is 1, 2, 3 or 4 and n is 1 or 2, in the temperature range from 200° to 350° C. n Bromoanthraquinones of more than 95% purity are valuable starting materials for dye synthesis and can be used directly without further purification. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4855517-A |
| priorityDate |
1983-06-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |