Regioselectivity in the Diels–Alder reactions of 3- and 4-substituted 1-trimethylsilylbutadienes
Abstract
1-Trimethylsilylbutadienes with a substituent in the 3- or 4- position undergo Diels-Alder reactions in which the regioselectivity is controlled by the 3- or 4- substituent rather than by the trimethylsilyl group.