http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2014107728-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-54 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-41 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C45-52 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C67-293 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C45-42 |
| filingDate | 2012-05-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2015-09-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2014107728-A |
| titleOfInvention | PREPARATION METHOD 3, 3-DIMETHYL BUTYRALDEHYDE |
| abstract | 1. A method for producing 3,3-dimethylbutyraldehyde, including: 1) obtaining tert-butyl chloride and vinyl acetate as a raw material, carrying out a catalytic reaction between tert-butyl and vinyl acetate to obtain 1-chloro-3,3-dimethylbutyl acetate in the presence of a catalyst, in in which, the weight ratio of tert-butyl chloride to vinyl acetate is 1:0.84-0.93; and 2) adjusting the temperature from 100 to 110°C FOR, carrying out hydrolytic disproportionation of 1-chloro-3,3-dimethyl butyl acetate in the presence of a catalyst to obtain a mixture containing 3,3-dimethylbutyraldehyde; and purifying the mixture by distillation to obtain 3,3-dimethylbutyraldehyde, in which the catalyst is aluminum trichloride, p-toluenesulfonic acid or iron trichloride. Method according to claim 1, characterized in that: 1) 50 kg of dichloromethane are placed in the first reactor, mixed and cooled to a temperature between -7 and 2°C; 1.3 kg of aluminum trichloride is added, 20 kg of tert-butyl chloride falls over 3 h and 18.6 kg of vinyl acetate falls over 2 h to obtain a mixture; and the mixture is left to react at -2 to 0°C for 2 hours; after the reaction, 14 kg of deionized water is added to the first reactor and mixed completely; the organic phase is separated and washed with 6.7 kg of 5% sodium carbonate solution until a pH value between 8 and 9; the dichloromethane organic phase is collected and 5 kg of anhydrous sodium sulfate is added to dry; the dichloromethane is condensed and reduced at a temperature between 30 and 50°C and the organic phase is distilled in vacuo, first the fraction is collected at 60-64°C/20 mmHg. and 35.7 kg of 1-chloro-3,3-dimethylbutyl acetate is obtained; i2) 35.7 kg 1-chloro-3,3-dimethylbutyl acetate doba |
| priorityDate | 2011-08-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.