作者:Árpád Molnár、Károly Felföldi、Mihály Bartók
DOI:10.1016/s0040-4020(01)97972-4
日期:1981.1
stereochemistry of the cyclodehydration of (±)- and meso-2,5-hexanediol on the action of various dehydrating agents was investigated. The earlier assumed and confirmed intramolecular SN2 mechanism for acid-catalysed ring-closure was found to hold in most cases. Various extents of racemisation can be observed on the action of certain Lewis acids, and the solvents concentrated H2SO4 and HMPT (hexamethyl
研究了(±)-和内消旋-2,5-己二醇的环脱水作用对各种脱水剂作用的立体化学。在大多数情况下,发现采用了较早的假设并证实的分子内S N 2酸催化的闭环机理。在某些路易斯酸的作用下,可以观察到各种程度的外消旋作用,并且溶剂在先前未经检查的反应条件下浓缩了H 2 SO 4和HMPT(六甲基磷酸三酰胺)。