作者:Andrzej Wiśniewski、Janusz Szafranek、Janusz Sokołowski
DOI:10.1016/s0008-6215(00)80668-0
日期:1981.11
Abstract The products of dehydration of pentitols in aqueous sulfuric acid have been studied by g.l.c.-m.s. Four isomeric 1,4-anhydropentitols were formed from d -arabinitol, but only two from xylitol and ribitol. The number of products could only be explained by assuming inversion of configuration at C-2 or C-4 during 1,4- or 2,5-cyclisation reactions. No product which involved inversion of configuration
摘要用glc-ms研究了戊糖醇在硫酸水溶液中的脱水产物,其中d-阿拉伯糖醇形成了4种异构体1,4-脱水戊糖醇,而木糖醇和核糖醇仅形成了两种异构体。只能通过假设在1,4-或2,5-环化反应过程中C-2或C-4的构型反转来解释产物的数量。没有观察到涉及C-3构型反转的产物。考虑了各种异构化机理。