通过依次进行惰性C–O键裂解和随后的分子内C–N键形成过程,开发了构建铜吲哚并[3,2- b ]喹唑啉酮的铜催化无卤方案的第一个实例。该协议代表了一种有效的合成工具,可用于获得更多种类的功能化吲唑并[3,2- b ]喹唑啉酮。通过X射线晶体衍射分析明确地确认了新合成的吲唑并[3,2- b ]喹唑啉酮的结构。
Copper(I)-Catalyzed Synthesis of 5-Arylindazolo[3,2-<i>b</i>]quinazolin-7(5<i>H</i>)-one via Ullmann-Type Reaction
作者:Dong-Sheng Chen、Guo-Lan Dou、Yu-Ling Li、Yun Liu、Xiang-Shan Wang
DOI:10.1021/jo400420b
日期:2013.6.7
The treatment of 2-amino-N'-arylbenzohydrazide and o-halogenated benzaldehyde in the presence of CuBr and Cs2CO3 gave 5-arylindazolo[3,2-b]quinazolin-7(5H)-one in high yields. This procedure contains an Ullmann-type reaction and provides an efficient method to construct fused tetracyclic heterocycles.