http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105481722-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C253-06 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C255-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C253-06 |
| filingDate | 2016-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2017-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2017-08-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105481722-B |
| titleOfInvention | A kind of preparation method of the dicyan anthraquinone of 1,4 diaminourea 2,3 |
| abstract | The present invention relates to a kind of preparation method of the dicyan anthraquinone of Isosorbide-5-Nitrae diaminourea 2,3, with the dichloroanthraquinone of Isosorbide-5-Nitrae diaminourea 2,3 for raw material, in the presence of phase transfer catalyst, dehydrating agent and acid binding agent, using high bp polar solvent as reaction medium, using formamide as cyanylation agent, it is heated to back flow reaction, cooled and filtered, washing, drying, the dicyan anthraquinone of Isosorbide-5-Nitrae diaminourea 2,3 is made.Technical scheme has low environment toxicity, low environmental protection pressure, the characteristics of technological operation is simple.The dicyan anthraquinone of 1,4 diaminourea 2,3 prepared by the present invention reaches prior art peer-level for preparing scattered kingfisher orchid S GL. |
| priorityDate | 2016-01-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.