http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106238098-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D233-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D233-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B01J31-0279 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C305-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B01J31-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-58 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D233-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C305-04 |
| filingDate | 2016-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2018-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2018-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-106238098-B |
| titleOfInvention | A kind of preparation method of 1,2,4,5-tetrasubstituted imidazole derivatives and its preparation catalyst |
| abstract | The invention discloses a preparation method of 1,2,4,5-tetrasubstituted imidazole derivatives and a catalyst for preparation thereof, belonging to the technical field of ionic liquid catalysis. In the preparation reaction of the present invention, the molar ratio of benzil, aromatic aldehyde, aromatic amine and ammonium acetate is 1:1:1:1-1.2, and the molar amount of the ionic liquid catalyst is 7-12% of the molar amount of benzil used , the volume of the reaction solvent ethanol aqueous solution in milliliters is 6 to 8 times the molar amount of benzil in millimoles, and the reflux reaction time is 15 to 45 minutes. After washing with aqueous solution and vacuum drying, 1,2,4,5-tetrasubstituted imidazole derivatives were obtained. The invention has the characteristics of high catalyst activity, biodegradability, simple product purification, high raw material utilization rate, simple and convenient operation of the whole preparation process, etc., and is convenient for large-scale industrial application. |
| priorityDate | 2016-07-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 71.