http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113354601-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_861b6586b35409d62c8776747f9aeb83 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D305-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D305-12 |
| filingDate | 2021-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d044c8f89426a5e772f8baa9771e29be http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_773711013645aebccdf470cd4147b583 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b090d05b577a4b6a56ed149a009c4eea http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b5ae89214f50e63762c92e11cea1dda8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_33f716620fb0ca4a6aadea2f82d761dc |
| publicationDate | 2021-09-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113354601-A |
| titleOfInvention | The preparation method of beta-propiolactone |
| abstract | The present invention relates to a preparation method of β-propiolactone, comprising the following steps: (1) dissolving 3-halopropionic acid in an organic solvent at room temperature, stirring and cooling to below 0° C., adding organic amine to obtain solution A; preparing The lye solution below 0°C is used as solution B; (2) at 0～2°C and stirring, the solution A is mixed with the solution B, and then the temperature is raised to 4～6°C to carry out the insulation reaction, and the reaction is stopped after the completion of the reaction. Stir, cool down to 0 ℃ and stand still to produce phase separation; (3) wash the organic phase obtained by phase separation with brine, then cool below 0 ℃, wash with water, dry and remove to obtain crude β-propiolactone, then Carry out distillation again to obtain product β-propiolactone. The method of the invention adopts the reaction process combining extraction and phase transfer, and conducts the reaction at low temperature, so that β-propiolactone can be prepared in high yield. |
| priorityDate | 2021-07-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 76.