Three-Component Synthesis of 2-Oxoindolin-3-ylphosphonates
作者:Ghazaleh Imani Shakibaei、Afsaneh Feiz、Ramin Ghahremanzadeh、Ayoob Bazgir
DOI:10.1248/cpb.58.896
日期:——
A one-pot, three-component and catalyst-free method for the efficient and simple synthesis of dialkyl 3-(dicyanomethyl)-2-oxoindolin-3-ylphosphonates at 50 °C under solvent-free conditions is reported. The features of this procedure are mild reaction conditions, high yields of products, and operational simplicity.
报告了一种在 50 °C 无溶剂条件下高效、简单合成 3-(二氰基甲基)-2-氧代吲哚啉-3-基膦酸二烷基化合物的单锅、三组分和无催化剂方法。该方法的特点是反应条件温和、产物收率高、操作简单。
A Simple and Green Tandem Knoevenagel–Phospha-Michael Reaction for One-Pot Synthesis of 2-Oxindol-3-ylphosphonates Catalyzed by a DABCO-Based Ionic Liquid
作者:Ya-Qin Yu、Da-Zhen Xu、Lan-Lan Song、Cheng Yang
DOI:10.1055/s-0036-1588357
日期:——
approach is readily amenable to large-scale synthesis. A simple, clean, and efficient approach for the one-potsynthesis of 2-oxindol-3-ylphosphonates has been successfully developed. With 7 mol% loading of the 1,4-diazabicyclo[2.2.2]octane-based ionic liquid catalyst, 2-oxindol-3-ylphosphonates form in good to excellent yields within short times. This tandemreaction involves a phospha-Michael addition