29843-58-1Relevant articles and documents
Preparation method of 4-acetyloxy2-methyl-2-butenal
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Paragraph 0064; 0065; 0069; 0073; 0077; 0081; 0085; 0090, (2018/12/03)
The invention discloses a preparation method of 4-acetyloxy2-methyl-2-butenal. The method includes following steps: (1), feeding isoprene and Cl2 into an organic solvent containing a catalyst 1 and apolymerization inhibitor for addition reaction to obtain reaction liquid containing 1, 4-dichlorinated olefin; (2), enabling dichlorinated olefin obtained in the step (1) to react with an acetylationreagent under action of an acid binding agent, a cocatalyst and a catalyst 2 to obtain chlorinated olefin aldehyde alcohol ester; (3), allowing a product obtained in the step (2) to react with hexamethylenetetramine to generate 4-acetyloxy2-methyl-2-butenal. Isoprene and chlorine are used as starting raw materials, are common chemical raw materials and are low in cost and easy to obtain, and noblemetal catalysts are not needed, so that the preparation method is low in cost, simple to operate and little in environment pollution and is an effective synthetic route.
Bromochlorination of Conjugated Dienes with Dichlorobromate(1-) Ion
Negoro, Takeshi,Ikeda, Yoshitsugu
, p. 3655 - 3656 (2007/10/02)
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