4-Mercapto-2-butanone synthesis
- Product Name:4-Mercapto-2-butanone
- CAS Number:34619-12-0
- Molecular formula:C4H8OS
- Molecular Weight:104.17
78-94-4
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Yield: 75%
Reaction Conditions:
with hydrogen sulfide in methanol at 20; for 1 h;Inert atmosphere;
Steps:
2
1.0 mL of methylbenzylamine starch catalyst (DS = 0.35) and 20 mL of methanol were added to a 100 mL four-necked flask. After stirring for 30 min, the mixture was cooled to 20 ° C and then passed to the reaction solution. (5g dilution to 20mL); after a period of time, the samples were subjected to liquid phase, liquid quality and temperament analysis until the liquid phase test showed that the separated liquid was separated from each other by adding a solution of hydrogen peroxide (0.4 L / h) After the product content is no longer changed, stop the introduction of hydrogen sulfide gas, nitrogen, and then the reaction solution, the filtrate under vacuum distillation, collecting the boiling point of 75-77 ° C products. The results showed that the conversion of methyl vinyl ketone could reach 85%, the selectivity of methyl mercaptoethyl ketone was 93%, and the yield was 75%.
References:
CHAMBROAD CHEMICAL INDUSTRY RESEARCH INSTITUTE CO.,LTD;Yi, Xianjun;Cheng, Zhen;Liu, JinZhang;Zhang, Jianlin;Yao, Gang;Ma, Yunsheng CN104276987, 2016, B Location in patent:Paragraph 0042-0043
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34619-12-0
34 suppliers
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