described using triphenylmethanol in the presence of tris(pentafluorophenyl)borane (3 mol %) in dichloromethane at room temperature. The chemoselectivity of this protocol is demonstrated by studying the tritylation of a primary alcohol in the presence of a secondary alcohol and also the mildness of this catalyst was studied with substrates containing acid labile protecting groups.
描述了在室温下在
二氯甲烷中在三(
五氟苯基)
硼烷(3mol%)存在下使用三
苯甲醇,有效地酸催化的醇作为三苯甲基醚的保护。通过研究在仲醇存在下伯醇的三苯甲基化来证明该方案的
化学选择性,并且还使用含有酸不稳定保护基的底物研究了该催化剂的温和性。