HClO4-supported on silica gel: a mild and efficient catalyst for Hosomi–Sakurai reaction

Perchloric acid supported on silica gel was found to be an efficient catalyst (2 mol %) for the Hosomi–Sakurai allylation of numerous aldehydes with allyltrimethylsilane in the presence of benzyl alcohol. This method was also effective for the allylation of secondary alcohols under mild experimental conditions.