In the presence of AlCl3, ethyl 2,3-butadiemoate reacts with a variety of olefins, including simple unactivated cycloalkenes, to give cyclobutylideneacetic esters at room temperature. The cycloaddition is regioselective and stereoselective.
在AlCl 3的存在下,2,3-
丁二酸乙酯与各种烯烃(包括简单的未活化的环烯烃)反应,在室温下生成
环丁烯乙酸酯。环加成是区域选择性和立体选择性的。