Cascade double isocyanide insertion and C–N coupling of 2-iodo-2′-isocyano-1,1′-biphenyls
作者:Hongwei Sun、Shi Tang、Dengke Li、Yali Zhou、Jinbo Huang、Qiang Zhu
DOI:10.1039/c8ob00956b
日期:——
A palladium-catalyzed double isocyanide insertion using 2-iodo-2′-isocyano-1,1′-biphenyls followed by copper-catalyzed intramolecular C–N coupling, delivering a unique heterocyclic structure containing both phenanthridine and carbazole scaffolds, has been developed. In this cascade process, four chemical bonds, including two C–C, one C–O, and one C–N bonds are formed consecutively without isolating
已经开发出使用2-碘-2'-异氰基-1,1'-联苯的钯催化的双异氰酸酯插入物,然后进行铜催化的分子内C-N偶联,从而提供了包含菲啶和咔唑骨架的独特杂环结构。在这种级联过程中,四个化学键连续形成,包括两个C–C,一个C–O和一个C–N键,而没有分离中间体。在双插入中使用官能化异氰酸酯的策略为构建具有高键形成效率的杂环体系提供了一种快速方法。