Regioselective C–H sulfenylation of <i>N</i>-sulfonyl protected 7-azaindoles promoted by TBAI: a rapid synthesis of 3-thio-7-azaindoles
作者:Jingyan Hu、Xiaoming Ji、Shuai Hao、Mingqin Zhao、Miao Lai、Tianbao Ren、Gaolei Xi、Erbin Wang、Juanjuan Wang、Zhiyong Wu
DOI:10.1039/d0ra06635d
日期:——
This paper describes the regioselective C-3 sulfenylation of N-sulfonyl protected 7-azaindoles with sulfonyl chlorides. In this transformation, dual roles of TBAI serving as both promoter and desulfonylation reagent have been demonstrated. The reaction proceeded smoothly under simple conditions to afford 3-thio-7-azaindoles in moderate to good yields with broad substrate scopes. This protocol refrains
本文描述了用磺酰氯对N-磺酰基保护的 7-氮杂吲哚进行区域选择性 C-3 亚磺酰化。在这种转化中,TBAI 作为促进剂和脱磺酰化试剂的双重作用已经得到证实。该反应在简单的条件下顺利进行,以中等至良好的收率得到具有广泛底物范围的3-硫代-7-氮杂吲哚。该协议避免使用过渡金属催化剂、强氧化剂或碱,并显示其在有机合成中的实用合成价值。