http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-108203419-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a7ef4b2579c7f141b15f860729bdbad8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_a2624d90b90c8e7641aae7e58baef407 |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-07 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02P20-55 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-33 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-33 |
| filingDate | 2016-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_bd78a134e7d5caba4a3bf26e15cb8efd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ba49aec488a6c5e068a50abcc7f5cb70 |
| publicationDate | 2018-06-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-108203419-A |
| titleOfInvention | The preparation method of Bu Waracetam intermediate |
| abstract | The invention discloses a preparation method of (R)-4-propyl-4,5-dihydrofuran-2-one, which obtains R-configuration carboxylic acid compound and S configuration carboxylic acid compound; respectively react the R configuration carboxylic acid compound and/or the S configuration carboxylic acid compound to obtain (R)-4-propyl-4,5-dihydrofuran-2-one. The preparation method of the present invention cleverly designs the synthesis route. The two optically pure isomers obtained by splitting the carboxylic acid compound are comprehensively utilized through different reaction routes respectively, and finally the target compound is obtained, which improves the optical purity while ensuring the optical purity. The utilization rate of the isomer is improved, and the tedious steps of racemization and re-resolution of the other half of the isomer are omitted. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109400556-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110357839-A |
| priorityDate | 2016-12-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 22.