http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106632228-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-584 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D317-50 |
| filingDate | 2016-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2019-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2019-07-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106632228-B |
| titleOfInvention | A kind of preparation method of dihydrosafrole |
| abstract | The invention provides a preparation method of dihydrosafrole, comprising: A) reacting piperonyl ring and propionic anhydride under the catalysis of zinc chloride to obtain 3,4-(methylenedioxy)propiophenone; B) catalytic hydrogenation of 3,4-(methylenedioxy)propiophenone to obtain dihydrosafrole. The invention uses piperonyl ring and propionic anhydride as raw materials, selects zinc chloride as catalyst, carries out acylation reaction to obtain acylation intermediate, and then uses water as solvent to carry out catalytic hydrogenation, two-step reaction to obtain dihydrosafrole, the reaction time is short, and the conditions It is mild, has high yield and product selectivity, less catalyst dosage, recyclable by-product propionic acid, and recyclable catalytic hydrogenation catalyst. |
| priorityDate | 2016-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.