http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110981884-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-04 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-04 |
| filingDate | 2019-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-03-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110981884-B |
| titleOfInvention | Method for efficiently preparing high-quality benzodifuranone |
| abstract | The application discloses a method for efficiently preparing high-quality benzodifuranone, which belongs to the optimization category of an organic synthesis post-treatment route, and the synthesis route is as follows: the method comprises the following specific steps: (1) putting N, N-diethyl-furan-3-formamide in anhydrous THF, dropwise adding N-BuLi hexane solution at 4 to-10 ℃ under a protective atmosphere, after the addition is finished, heating to room temperature and stirring for 4.0 to 6.0 hours; (2) pouring the mixed solution into deionized water, and stirring at room temperature for 2.0-5.0 h; (3) spinning out deionized water and THF by a rotary evaporator; (4) pouring the residual sticky substance into a sand core funnel provided with a separation layer, and washing with dichloromethane for multiple times until the color of the filtrate becomes transparent; (5) the filtrate dichloromethane is spun out through a rotary evaporator; (6) vacuum drying to obtain high-quality benzodifuranone. |
| priorityDate | 2019-12-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.