Rhodium-catalyzed synthesis of C4-chalcogenoalkylated oxindoles via Sommelet-Hauser type rearrangement of 3-diazoindolin-2-ones
作者:Angula Chandra Shekar Reddy、Bhojkumar Nayak、Pazhamalai Anbarasan
DOI:10.1007/s12039-019-1711-9
日期:2019.12
rhodium-catalyzed Sommelet-Hauser type rearrangement of 3-diazoindolin-2-ones with α-thioesters has been accomplished for the synthesis of C4-thioalkylated oxindoles. The developed reaction offers the selective functionalization of C4-position of oxindole via generation of S-ylide and [2, 3]-sigmatropic rearrangement and allows access to diverse C4-thioalkylated oxindoles in good to excellent yield. Furthermore
摘要3- α-重氮吲哚-2-酮与α-硫代酯的铑催化的Sommelet-Hauser型重排已经完成,用于合成C4-硫代烷基化的吲哚。所开发的反应通过生成S-内酯和[2,3]-σ重排提供了对羟吲哚C4位置的选择性功能化,并允许以优良的产率获得各种C4-硫代烷基化的羟吲哚。此外,该方法已成功地扩展到使用相应的α-硒酸酯合成C4-硒烷基化的羟吲哚。 图形摘要已经公开了具有α-硫代/ α-硒代酯的3-二重氮吲哚-2-酮的有效铑催化的Sommelet-Hauser型重排,用于合成C4-硫代/硒代烷基化的吲哚。