- A process for preparing 4 - acetoxy -2 - methyl -2 - butenal new method
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The present invention provides a process for preparing 4 - acetoxy - 2 - methyl - 2 - butenal new method. Comprises the following steps: 1, fed with methanol reaction to generate acetal thing (I); 2, acetal thing (I) under the catalysis of the copper salt with the peroxide tert-butyl acetate is generated by the reaction (II) shrinks the aldehydo-ester; 3, shrinks the aldehydo-ester (II) hydrolyzed under acidic conditions to obtain 4 - acetoxy - 2 - methyl - 2 - butenal. The method of starting material fed in cheap and easy to obtain, the process route is short, three wastes, synthetic route economic and effective.
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Paragraph 0059; 0064; 0068; 0070; 0072
(2019/01/08)
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