alkynes has been well studied. A method is reported that utilizes the β-silyl effect to override this typically observed anti selectivity and provides halogenation products that result from syn addition. The reaction involves the addition of iodine monochloride to trialkylsilyl-substituted alkynes to produce tetrasubstituted (Z)-dihaloalkenes in good to excellent yields and with excellent regio- and diastereoselectivity
已经对双原子卤素向
炔烃的立体选择性抗加成进行了充分的研究。据报道,一种方法利用β-甲
硅烷基效应来克服这种通常观察到的抗选择性,并提供由顺式加成产生的卤化产物。该反应包括将
碘化
一氯化碘加到三烷基甲
硅烷基取代的
炔烃上,以良好的产率,优异的区域选择性和非对映选择性来生产四取代的(Z)-二卤代烯烃。