A Copper-Catalyzed One-Pot, Three-Component Diastereoselective Synthesis of 3-Spiroazetidinimine-2-oxindoles and Their Synthetic Transformation into Fluorescent Conjugated Indolones
作者:Somasundharam Periyaraja、Ponnusamy Shanmugam、Asit Baran Mandal
DOI:10.1002/ejoc.201301244
日期:2014.2
copper(I)-catalyzed one-pot, three-component diastereoselective synthesis that provides new 3-spiroazetidinimine-2-oxindoles in excellent yield has been accomplished. The 3-spiroazetidinimine-2-oxindoles underwent a facile ring-opening reaction of the spiroazetidinimine unit by treatment with KOH/MeOH and p-thiocresol under basic conditions to afford two new classes of fluorescent conjugated indolones. This method
一种简便高效的铜 (I) 催化一锅、三组分非对映选择性合成已完成,该合成以优异的收率提供了新的 3-spiroazetinimine-2-oxindoles。通过在碱性条件下用 KOH/MeOH 和对硫甲酚处理,3-spiroazetidinimine-2-oxindoles 经历了 spiroazetidinimine 单元的轻松开环反应,以提供两类新的荧光共轭吲哚酮。该方法对于衍生自 9-芴酮、1,2-二酮和 1,2,3-三酮的亚胺具有普遍应用。