http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-103739476-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2602-28 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C51-36 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C57-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C51-36 |
| filingDate | 2013-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2016-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2016-02-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-103739476-B |
| titleOfInvention | A kind of preparation method of dihydroartemisinic acid |
| abstract | A kind of preparation method of dihydroartemisinic acid, step is as follows: be dissolved in by arteannuinic acid in organic solvent, then, add the hydrazine hydrate of any concentration and the guanidinesalt of catalytic amount, regulate temperature of reaction to 25 DEG C ~ 100 DEG C, then in reaction solution, drip the hydrogen peroxide of any concentration or pass into oxygen and original position produces diimine, make arteannuinic acid be reduced to dihydroartemisinic acid by the diimine that original position produces, through extraction, drying, obtain dihydroartemisinic acid.Energy consumption of the present invention is low, and the reaction times is short, and preparation technology is simple, and the yield of dihydroartemisinic acid is high, is applicable to suitability for industrialized production on a large scale. |
| priorityDate | 2013-11-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.