http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-107382961-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D335-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D335-02 |
| filingDate | 2017-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2020-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2020-10-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-107382961-B |
| titleOfInvention | A kind of method for preparing 2-thiocarbonyl-2H-thiopyran derivatives by chitosan-catalyzed one-pot method |
| abstract | The invention discloses a method for preparing 2-thiocarbonyl-2H-thiopyran derivatives by one-pot catalysis of chitosan, and belongs to the technical field of chemical material preparation. The chitosan-catalyzed one-pot method for preparing 2-thiocarbonyl-2H-thiopyran derivatives of the present invention uses aryl ethyl ketone, malononitrile and carbon disulfide as reaction raw materials, and passes through the chitosan catalyst under the catalytic action of the chitosan catalyst. One-step reaction directly generates 2-thiocarbonyl-2H-thiopyran derivative, the molar ratio of aryl ethyl ketone, malononitrile and carbon disulfide in the reaction is 1: (1～1.4): 1, and the chitosan catalyst is in grams The mass is 20 to 33% of the amount of substance in millimoles of the aryl ethyl ketone used. The technical scheme of the present invention greatly simplifies the preparation process of the 2-thiocarbonyl-2H-thiopyran derivative, and the catalyst has high catalytic activity, is biodegradable, can be recycled, the utilization rate of raw materials is high, and the product purification is convenient. |
| priorityDate | 2017-07-31-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 62.