Various acetals or alcohols react with allyl(trimethyl)silane
or 1-phenyl-2-(trimethylsilyl)acetylene in the presence of a catalytic
amount of the Brønsted acid o-benzenedisulfonimide
under mild conditions to give good yields of the corresponding products.
The catalyst can be easily recovered and purified for use in further
reactions, which has economic and ecological advantages.
homogeneous catalysis - Brønsted acid - Hosomi-Sakurai reaction - acetals - alcohols