PPh<sub>3</sub>‐Mediated Wittig‐Like/Mannich Tandem Reactions of 2‐Alkynylnitrobenzenes with Ketones for the Synthesis of 2,2‐Disubstituted Indolin‐3‐Ones
Hui Fan, Yao Xu, Fan Yang, Shijie Xu, Xuechun Zhao, Xiaoxiang Zhang
Abstract
Abstract A synthetic strategy for the construction of 2,2‐disubstituted indolin‐3‐ones from 2‐alkynylnitroarenes and ketones has been described. The corresponding indolin‐3‐one derivatives were afforded in moderate to excellent product yields by using mild conditions. After a Wittig‐like process, the key intermediates 3 H ‐indol‐3‐ones were generated from 2‐alkynylnitroarenes, which could be further transformed to the desired products through a Mannich addition. magnified image
Topics & Concepts
ChemistryWittig reactionTandemMannich reactionOrganic chemistryCombinatorial chemistryCatalysisMaterials scienceComposite materialSynthesis and Catalytic ReactionsCatalytic C–H Functionalization MethodsSynthesis of Indole Derivatives