http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-111825640-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_01184f04054044cf5b483f07aae2ebef |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07B2200-07 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D307-33 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D307-33 |
| filingDate | 2020-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_141e1ae17c776e194ec1f2f09077cd31 |
| publicationDate | 2020-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-111825640-A |
| titleOfInvention | Method and apparatus for producing pantolactone racemate |
| abstract | The invention provides a method and a device for preparing a pantolactone racemate. The method comprises the following steps: (a) mixing and preheating L-pantolactone and a catalyst to 100 ℃ to 200 ℃ to obtain a preheated mixture, said mixing being carried out in a mixing device, said preheating being carried out in a preheater connected to said mixing device upstream or downstream of said mixing device; (b) introducing the preheated mixture obtained in step (a) into a sealed reactor connected to the preheater or the mixing device through the inlet of the sealed reactor, wherein the temperature inside the sealed reactor is maintained at 100 ℃ to 200 ℃, and the mixture inside the sealed reactor flows from the inlet of the sealed reactor to the outlet side of the sealed reactor, where the mixture undergoes a racemization reaction to give a pantolactone racemate. The method and the device are simple and convenient to operate, the continuous racemization of the L-pantoyl lactone is realized, and the yield is high. |
| priorityDate | 2020-07-23-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 60.