(E)- and (Z)-α-substituted cinnamates in good yield has been achieved by dehydration reaction of anti- and syn-α-substituted-β-hydroxyphenylpropiolate using EDC. This facile method has been used to synthesize various (E)- and (Z)-α-substituted cinnamates and (E)- and (Z)-α-alkylidene-γ-butyrolactones. The reaction mechanism of this highly stereospecific dehydration using EDC can be elucidated by the
对的(合成甲高度立体选择性方法ë) -和(Ž)-α-取代的以良好的收率
肉桂酸酯已经通过脱
水反应实现的抗-和SYN使用EDC-α取代-β-hydroxyphenylpropiolate。该简便的方法已经用于合成各种(E)-和(Z)-α-取代的
肉桂酸酯以及(E)-和(Z)-α-亚烷基-
γ-丁内酯。可以通过EDC的ω-二甲基
氨基基团阐明使用EDC的这种高度立体定向脱
水的反应机理,据信这有助于去质子化步骤。