Substrate-Controlled Regiodivergent Synthesis of Fluoroacylated Carbazoles via Friedel–Crafts Acylation
作者:Xian-Tao Wu、En-Kai Xiao、Feng Ma、Jin Yin、Jie Wang、Peng Chen、Yi-Jun Jiang
DOI:10.1021/acs.joc.1c00473
日期:2021.5.7
A general, efficient, and substrate-controlled regiodivergent trifluoroacetylation of carbazoles has been developed through Friedel–Crafts acylation. This strategy was applicable to a wide scope of readily available substituted carbazoles at air atmosphere without using a metal catalyst, affording the corresponding trifluoroacetylated carbazoles in up to 99% yield. The divergency of the products and
通过Friedel-Crafts酰化反应,开发了一种通用,有效且受底物控制的咔唑区域发散性三氟乙酰化试剂。该策略适用于在大气气氛下不使用金属催化剂的各种易于获得的取代咔唑,从而以高达99%的收率提供了相应的三氟乙酰化咔唑。已经基于咔唑环上的不同取代基说明了产物的发散性和取向规则。该方法还可以扩展到首次实现的氯二氟乙酰化和五氟丙酰化咔唑的合成。