Vinyl-stannanes and -silanes having a substituent at the 1-position react with carbon electrophiles at the terminal position, i.e., the normal ipso electrophilic substitution based on the β-effect is not observed.
在1-位具有取代基的
乙烯基锡烷和-
硅烷与在末端位置的碳亲电试剂反应,即,未观察到基于β效应的正常的ipso亲电取代基。