http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110078623-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C201-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C205-11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C201-12 |
| filingDate | 2019-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-05-06-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110078623-B |
| titleOfInvention | Method for preparing 2,2 '-bis (trifluoromethyl) -4, 4' -dinitrobiphenyl |
| abstract | The invention provides a method for preparing 2,2 '-bis (trifluoromethyl) -4, 4' -dinitrobiphenyl, which comprises the steps of dissolving a raw material of 2-chloro-5-nitrobenzotrifluoride in a polar solvent, sequentially adding a catalyst, a ligand and metal ions, heating for reaction, cooling a reaction liquid to 50 ℃ after the raw materials are completely reacted, carrying out heat filtration, washing a filter cake by NMP, recovering the NMP from a filtrate, cooling for crystallization, filtering, washing the filter cake by methanol, and drying to obtain a product of 2,2 '-bis (trifluoromethyl) -4, 4' -dinitrobiphenyl, namely a yellow solid. The invention has the advantages of easily purchased raw materials, low price, higher reaction yield, simple post-treatment, recyclable solvent, low requirement on production equipment and the like. |
| priorityDate | 2019-06-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 47.