A procedure for preparing anhydropentitol mono, di, and tri esters is described. The process is performed in a single vessel and involves sequential dehydrative cyclization and carboxylic acid acylation steps. Each step is catalyzed by low loadings of a water-tolerant Lewis acid catalyst. The method of synthesis is efficacious and depending on the reaction condition, generates modest to high yields of the target mono-, di-, and triesters. The esters can be practical surrogates of incumbent petroleum materials of similar structure used for surfactants and plasticizers.
描述了一种制备无
水戊糖醇单酯、二酯和三酯的方法。该过程在单个容器中进行,并涉及顺序脱
水环化和
羧酸酯化步骤。每个步骤都由
水耐受的Lewis酸催化剂低负载催化。合成方法高效,并根据反应条件,产生目标单酯、二酯和三酯的适度到高收率。这些
酯类可以是类似结构的石油材料的实用替代品,用于表面活性剂和
增塑剂。