Scandium Trifluoromethanesulfonate as an Extremely Active Lewis Acid Catalyst in Acylation of Alcohols with Acid Anhydrides and Mixed Anhydrides
作者:Kazuaki Ishihara、Manabu Kubota、Hideki Kurihara、Hisashi Yamamoto
DOI:10.1021/jo952237x
日期:1996.1.1
is commercially available, is a practical and useful Lewis acid catalyst for acylation of alcohols with acid anhydrides or the esterification of alcohols by carboxylic acids in the presence of p-nitrobenzoic anhydrides. The remarkably high catalytic activity of scandium triflate can be used for assisting the acylation by acid anhydrides of not only primary alcohols but also sterically-hindered secondary
可商购的三氟甲磺酸(三氟甲磺酸late)是一种实用且有用的路易斯酸催化剂,用于在对硝基苯甲酸酐的存在下将醇与酸酐酰化或将醇通过羧酸酯化。三氟甲磺酸scan的极高的催化活性可用于协助伯醇的酸酐酰化以及空间受阻的仲或叔醇的酸酐酰化。所提出的方法对于ω-羟基羧酸的选择性大内酯化特别有效。