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Process for the preparation of 1,1-cyclopropanedicarboxylic diesters
Process for the preparation of 1,1-cyclopropanedicarboxylic diesters
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机译:制备1,1-环丙烷二羧酸二酯的方法
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摘要
1,1-cyclopropanedicarboxylic diesters are prepared from malonic diesters, 1,2-dihaloethane and alkali metal carbonate in the presence of a mixture of available or in situ-produced phase transfer catalyst and polyalkylene glycol or derivatives thereof which are capped at one or both ends, in particular those with ether end groups, where the molar ratio of malonic diester: 1,2-dihaloethane: alkali metal carbonate is 1:(1 to 7):(1 to 1.4).
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