Tandem Reactions Leading to Benzo[c]chromen-6-ones and 3-Substituted Isocoumarins
作者:Xuesen Fan、Yan He、Liangyan Cui、Shenghai Guo、Jianji Wang、Xinying Zhang
DOI:10.1002/ejoc.201101559
日期:2012.2
A simple and convenient protocol for the synthesis of benzo[c]chromen-6-ones and 3-substituted isocoumarins through a CuI-catalyzed tandem reaction of 2-bromobenzoates withcyclohexane-1,3-diones or acyclic 1,3-diones is developed. This strategy can also be extended to the one-pot synthesis of isoquinolin-1(2H)-one and 3,4-dihydrophenanthridine-1,6(2H,5H)-dione.
开发了一种通过 CuI 催化的 2-溴苯甲酸酯与环己烷-1,3-二酮或无环 1,3-二酮的串联反应合成苯并 [c] chromen-6-ones 和 3-取代异香豆素的简单方便的方案. 这种策略也可以扩展到异喹啉-1(2H)-one 和 3,4-二氢菲啶-1,6(2H,5H)-二酮的一锅法合成。