Synthesis of Diverse Allylsilanes Employing Br?nsted Acid Catalyzed Reductive Functionalization

We present a rapid (0.25-1 h), method to produce functionalised allylsilanes from readily available vinylsilanes. Employing a Bronsted acid catalysed dehydration as the key step, allylsilanes are produced in good yields (22-98%) and, in most cases, as a single geometric isomer. Furthermore, a possible allylation-Cope pathway was discovered for certain substrates and attempts to optimise this are described. image