http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113620797-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4390090d52f86035df02ea3bb249be25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ff4ec19601a2c9ba8361b9c3ecb85a9a |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-455 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C49-807 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-45 |
| filingDate | 2021-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e5ef4b8cb458deacea79af8cf31fa0af http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4f94371630ad2fa04a1f5d67af8f4976 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f1d27f70d373b9ba73abecef075ab7e5 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3213cd9cf0b3e91f9688d2516df7be11 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_28a0601fa3bdfc6bc748722a938a4020 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_579fc3312241e8dc49821dea1d1fd761 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_560bdfcdd5a9e1bf6072f971b882b725 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_123d82088ac0a8f4f4df77d3ace9c002 |
| publicationDate | 2021-11-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113620797-A |
| titleOfInvention | Method for preparing 2, 4-dichloroacetophenone |
| abstract | The application discloses a method for preparing 2, 4-dichloroacetophenone, which comprises the following steps: s1: mixing dichlorobenzene, aluminum trichloride and an amide auxiliary agent and stirring; s2: when the stirring temperature is raised to 40 ℃, acetyl bromide is dripped into the mixture for reaction to obtain 2, 4-dichloroacetophenone synthetic solution; s3: adding the 2, 4-dichloroacetophenone synthetic solution obtained in the step 2 into hydrochloric acid for acidolysis and layering, and separating and washing an oil layer after layering; s4: dehydrating the washed oil layer in a vacuum environment, and removing light when the temperature is raised to 98 ℃; s5: rectifying the residue after dehydration and lightness removal to obtain the 2, 4-dichloroacetophenone. This application is through adopting acetyl bromide as the raw materials, can effectively reduce electrophilic reagent's activity, and further can improve the yield of product. Meanwhile, the amide auxiliary agent is added in the preparation process of the 2, 4-dichloroacetophenone synthetic solution, so that the dissolution of aluminum trichloride is promoted, the contact area of reactants is increased, and the reaction efficiency is greatly improved. |
| priorityDate | 2021-08-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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