http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-112457229-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C2601-16 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07F9-5442 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-56 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-293 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C403-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C403-12 |
| filingDate | 2020-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-11-08-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-112457229-B |
| titleOfInvention | A kind of preparation method of vitamin A acetate |
| abstract | The invention provides a preparation method of vitamin A acetate. The method steps include: reacting bromoethanol and acetone to prepare a ketal compound; after preparing the Grignard reagent, the ketal compound is reacted with carbon pentaaldehyde to prepare heptacarbon alcohol; Heptacarbon alcohol and triphenylphosphorus are reacted to prepare heptacarbon phosphine salt, which is further reacted with ionone to obtain vitamin A acetate. This process provides a C13+C7 vitamin A acetate synthesis route, which improves vitamin A acetate. The yield is lower, the process cost is reduced, and it is more conducive to industrial production. |
| priorityDate | 2020-11-30-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 82.