Al(OTf)3 as a recyclable catalyst conducts the efficient conversion of various types of α-hydroxyphosphonates to their corresponding α-trimethysilyloxyphosphonates with HMDS in the absence of solvent at room temperature. The general applicability of the catalyst under solvent-free conditions is demonstrated by applying it for the successful silylation of alcohols and phenols with HMDS in high yields.
三氟甲磺酸铝(Al(OTf)3)作为一种可回收催化剂,在室温下无溶剂存在的条件下,能高效地将各种类型的α-羟基
膦酸酯转化为相应的α-三甲基
硅氧基
膦酸酯,使用的是六甲基二
硅胺烷(
HMDS)。该催化剂在无溶剂条件下的广泛适用性通过其在高产率下成功实现醇和
酚与
HMDS的
硅烷化反应而得到证明。