http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113387851-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C315-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C315-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C317-14 |
| filingDate | 2021-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2021-10-29-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113387851-B |
| titleOfInvention | Preparation method of 4, 4' -dichlorodiphenyl sulfone |
| abstract | The invention belongs to the technical field of organic synthesis, and particularly relates to a preparation method of high-purity 4, 4' -dichlorodiphenyl sulfone. The preparation method of the high-purity 4, 4' -dichlorodiphenyl sulfone comprises the following steps: mixing molybdate, organic dicarboxylic acid and hydrogen peroxide, dropwise adding the mixture into a mixed solution of 4,4 '-dichlorodiphenyl sulfoxide and a solvent for reaction, and performing aftertreatment after the reaction is finished to obtain high-purity 4, 4' -dichlorodiphenyl sulfone and residual filtrate; the rest filtrate is directly used for the next round of reaction after layering; the molar ratio of 4, 4' -dichlorodiphenyl sulfoxide to molybdate to organic dicarboxylic acid to hydrogen peroxide is 1: 0.01-0.05: 0.02-0.1: 1-3. The invention provides a preparation method of high-purity 4, 4' -dichlorodiphenyl sulfone, which is low in catalyst cost, simple in preparation steps and post-treatment steps, high in purity and high in yield, and residual reaction filtrate is recycled and efficiently utilized. |
| priorityDate | 2021-08-18-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 37.