Treatment of aromatic α-phosphorylacrylate derivatives 1a-h with Mg turnings in the presence of trimethylsilyl chloride brought about facile and regioselective C-silylation to give the corresponding β-silylated phosphonates 2a-h in excellent yields. The reaction took place smoothly for activated olefins possessing appropriate reduction potentials and may be initiated by electron transfer from Mg to 1a-h.
对芳香族α-
磷酸丙烯酸酯衍
生物1a-h与
镁粉在三
甲基氯硅烷存在下的处理,导致了简单且区域选择性的C-
硅化,生成相应的β-
硅基化
磷酸酯2a-h,产率极高。该反应在具有适当还原电位的活化烯烃中顺利进行,并可能由
镁向1a-h的电子转移引发。