http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-109970721-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D405-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D405-04 |
| filingDate | 2019-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-06-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-109970721-B |
| titleOfInvention | Process for preparing 3-benzimidazole chromene derivatives |
| abstract | A preparation method of 3-benzimidazole chromene derivative comprises the steps of putting aromatic aldehyde, 2-cyanomethyl benzimidazole, 5-dimethyl-1, 3-cyclohexanedione, pyridine and a solvent into a reactor, and reacting under the reflux condition; after the reaction is finished, cooling the reaction system to room temperature to separate out a product, and performing suction filtration to obtain a crude product; and washing the crude product to obtain a pure product of the 3-benzimidazole chromene derivative. After the reaction is finished, pure products can be obtained only by suction filtration and washing, and the method is simple to operate, convenient to post-treat and low in production cost. |
| priorityDate | 2019-02-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 38.