NaHSO 4 ·SiO 2 was used as an efficient heterogeneous catalyst for both the formation and the cleavage of benzylidene -acetals. This catalyst is compatible with many functional or protective groups. Under different solvent systems, either the formation or the cleavage of benzylidene acetals was carried out smoothly in -excellent yields and with good chemoselectivity.
NaHSO 4 ·SiO 2 被用作一种有效的多相催化剂,用于苯亚甲基-
缩醛的形成和裂解。该催化剂与许多官能团或保护基团相容。在不同的溶剂体系下,亚苄基
乙缩醛的形成或裂解均以优异的收率和良好的
化学选择性顺利进行。