http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-110776441-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C41-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C303-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C17-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C37-055 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C303-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C309-66 |
| filingDate | 2019-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2022-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2022-03-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-110776441-B |
| titleOfInvention | Synthesis method of 4-fluoro-2, 3-dimethylphenylmethylsulfonate |
| abstract | The invention discloses a method for synthesizing 4-fluoro-2, 3-dimethylphenylmethylsulfonate, which comprises the following steps: firstly, halogenating 3-fluoroxylene to obtain 4-fluoro-2, 3-dimethyl halogenated benzene; coupling reaction is carried out on the di-4-fluoro-2, 3-dimethyl halogenated benzene to obtain 4-fluoro-2, 3-dimethyl phenyl ether; hydrolyzing the 4-fluoro-2, 3-dimethylphenyl ether to obtain 4-fluoro-2, 3-dimethylphenol; esterification reaction is carried out on the tetra, 4-fluoro-2, 3-dimethylphenol and methylsulfonyl chloride to obtain 4-fluoro-2, 3-dimethylphenyl methanesulfonate. According to the invention, 3-fluoroxylene is taken as a raw material, and the raw material is subjected to halogenation, coupling, hydrolysis and esterification in sequence, and different types of reactions are combined, so that the yield of 4-fluoro-2, 3-dimethylphenylmethylsulfonate is improved, expensive catalysts or raw materials are avoided, the preparation cost is reduced, the wastewater discharge is reduced, and the environmental protection pressure is relieved. |
| priorityDate | 2019-11-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 48.