使用I 2 / H 2 O 2系统将2-烯丙基-1,3-二酮转化为包含1,2-二氧戊环和四氢呋喃环的双环化合物
摘要:
基于2-烯丙基-1,3-二酮与I 2 / H 2 O 2体系的反应,开发了一种一锅法用于组装包含1,2-二氧戊环和四氢呋喃环的双环化合物。为了选择性形成四氢呋喃二恶唑,需要5摩尔过量的H 2 O 2和2倍过量的I 2。这些结构复杂的分子的合成是不寻常的,因为它不产生预期的桥连四恶烷,将几个H 2 O 2分子加到羰基上的产物或双键碘代过氧化的产物。
Polymer-supported selenium-induced electrophilic cyclization: solid-phase synthesis of poly-substituted dihydrofurans and tetrahydrofurans
作者:E. Tang、Xian Huang、Wei-Ming Xu
DOI:10.1016/j.tet.2004.08.042
日期:2004.10
Poly-substituted dihydrofurans and tetrahydrofurans have been synthesized through polymer-supported selenium-induced intramolecular electrophilic cyclization, followed by selenoxide syn-elimination or novel nucleophilic substitution cleavage of selenium resin with good yields and purities. (C) 2004 Elsevier Ltd. All rights reserved.
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