http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-105503806-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4d32b4e3568d0ea6968d02316a7cff0b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-58 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-58 |
| filingDate | 2016-02-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7f45b88ed44ec070cc6655cf71ba04e3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4ba8db62174cbabdd25ed25905de3d16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e15ee68cc88d628abc01abcf990d89a3 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c1f8aff381f3c8ab8fd7238b657caeae |
| publicationDate | 2016-04-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-105503806-A |
| titleOfInvention | A method for catalytically preparing 2-amino-3-benzenesulfonyl-4H-pyran derivatives |
| abstract | The invention discloses a method for catalytically preparing 2-amino-3-benzenesulfonyl-4H-pyran derivatives, belonging to the technical field of organic chemical synthesis. In this preparation reaction, the mol ratio of aromatic aldehyde, 5,5-dimethyl-1,3-cyclohexanedione and benzenesulfonylacetonitrile is 1:1:1, and the molar amount of basic ionic liquid catalyst is the amount of aromatic aldehyde used. 8-10% of the reaction solvent, the volume of 95% methanol aqueous solution in milliliters is 5-8 times the amount of aromatic aldehyde in millimoles, the reflux reaction time is 2-5h, and the reaction is cooled to room temperature after completion of the reaction. After suction filtration, the filter residue was washed with methanol and dried in vacuo to obtain 2-amino-3-benzenesulfonyl-4H-pyran derivative. Compared with the preparation methods using other alkaline ionic liquid catalysts, the present invention has the characteristics of less catalyst usage, high raw material utilization rate, simple and convenient operation of the whole preparation process, etc., and is convenient for large-scale industrial application. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-106905283-A |
| priorityDate | 2016-02-03-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 18.