FeCl<sub>3</sub>and ether mediated direct intramolecular acylation of esters and their application in efficient preparation of xanthone and chromone derivatives
作者:Neng Jiang、Su-Yi Li、Sai-Sai Xie、Hequan Yao、Hongbin Sun、Xiao-Bing Wang、Ling-Yi Kong
DOI:10.1039/c4ra10174j
日期:——
The direct intramolecular acylation of esters was developed by using the combined system of FeCl3 with Cl2CHOCH3. This unique cooperative system offered a new and efficient approach to biologically important xanthone and chromone derivatives with regioselectivity. Examples were reported, and control experiments were carried out to examine the effect of the benzyl esters and Cl2CHOCH3.
通过使用FeCl3和Cl2CHOCH3的联合体系,发展了酯的直接分子内酰基化反应。该独特的协同体系为生物重要的黄酮和香豆素衍生物提供了一种新的高效方法,并具有区域选择性。报告了相关例子,并进行了对照实验,以检查苄基酯和Cl2CHOCH3的影响。