Phase-Transfer-Catalyzed Intramolecular Cyclization of<i>ortho</i>-Alkynyl Phenyl Ether Derivatives for Synthesis of 2,3-Disubstituted Benzo[<i>b</i>]furans
作者:Jie Hu、Lu-Yong Wu、Xiang-Chuan Wang、Yuan-Yuan Hu、Yan-Ning Niu、Xue-Yuan Liu、Shangdong Yang、Yong-Min Liang
DOI:10.1002/adsc.200900649
日期:2010.2.15
A variety of substituted benzo[b]furans are readily prepared in good to excellent yields under the mild reaction conditions from o-(1-alkynylphenoxy)-1-phenylethanone under phase-transfer catalysis (PTC). This methodology accommodates simple experimental operations, inexpensive and environmentally benign catalysts, metal catalyst-free conditions, facile reagents and the possibility to conduct large-scale
在相转移催化(PTC)下,由邻-(1-炔基苯氧基)-1-苯基乙酮在温和的反应条件下,可以容易地以良好的产率或优异的产率制备各种取代的苯并[ b ]呋喃。该方法学适用于简单的实验操作,廉价且对环境无害的催化剂,无金属催化剂的条件,简便的试剂以及进行大规模制备的可能性。通过整体结构异构化发展碳-碳键形成过程代表了最经济的方法。