http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0249969-A2
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7f9af914ed2fb00cd4f1b8b1a28964e4 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B1-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B1-18 |
| filingDate | 1987-06-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7a857639a35e458b94a5d176dbcd7cb7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4e965356f5e1a40752c1118f9c2ad084 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_593843a1a7cc57cae8046fd57d396225 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4f24a8b556bb74e60d1ea81934648aae http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a4ef652199b047201382ad87811735c8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_153f270c074a934d4753817420e40918 |
| publicationDate | 1987-12-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0249969-A2 |
| titleOfInvention | Process for production of 1-aminoanthraquinone |
| abstract | A process for producing 1-aminoanthraquinone, which comprisesn (a) a step of oxidizing 1-nitronaphthalene in the liquid phase with an acidic aqueous solution containing a ceric ion as an oxidizing agent and separating crystals containing 5-nitro-1,4-naphthoquinone and the acidic aqueous solution containing a cerium ion from the resulting reaction mixture, (b) a step of subjecting the 5-nitro-1,4-naphthoquinone obtained in step (a) to Diels-Alder reaction with 1,3-butadiene in a solvent, precipitating crystals containing the resulting 5-nitro-1,4,4a,9a-tetrahydroanthraquinone, separating them by filtration, separating and recovering the unreacted 1-nitronaphthalene and the solvent in the filtrate in a separation tower, and recycling 1-nitronaphthalene to step (a) for use as the starting material and re-using the recovered solvent for the Diels-Alder reaction, (c) a step of reducing 5-nitro-1,4,4a,9a-tetrahydroanthraquinone obtained in step (b), separating crystals containing 1-aminoanthraquinone and purifying them, and (d) a step of electrolytically oxidizing the acidic aqueous solution containing a cerium ion separated in step (a) to convert the cerous ion in the acidic aqueous solution to a ceric ion and recycling the resulting acidic aqueous solution containing a ceric ion to step (a) for re-use as the oxidizing agent. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-100463899-C http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101308113-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-101220149-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114381748-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113527134-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-114381748-B http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113527134-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5149848-A |
| priorityDate | 1986-06-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 140.