Vicinal dianions of diethyl α-aroylsuccinates: preparation of functionalized-2,3-dihydrofurans and -furans, and diaxial 2,4-diaryl-3,7-dioxabicyclo[3.3.0]octanes
作者:Manat Pohmakotr、Arisara Issaree、Laddawan Sampaongoen、Patoomratana Tuchinda、Vichai Reutrakul
DOI:10.1016/j.tetlet.2003.09.005
日期:2003.10
treatment of the adducts obtained with a catalytic amount of p-toluenesulfonic acid in refluxing toluene. cis-2,3-Dihydrofurans are used as precursors for the preparation of tetrasubstituted furans and diaxial 2,4-diaryl-3,7-dioxabicyclo[3.3.0]octanes.
在回流甲苯中用催化量的对甲苯磺酸处理加成物后,α-芳基琥珀酸二乙酯的邻位二价阴离子与芳族醛反应,以提供功能化的2,3-二氢呋喃为主要产物,并与γ-丁内酯一起提供。顺式-2,3-二氢呋喃用作制备四取代呋喃和双轴2,4-二芳基-3,7-二氧杂双环[3.3.0]辛烷的前体。