Microwave-assisted, solvent-free synthesis of 3′-(aryl/heteroaryl)-1-morpholinomethyl/piperidinomethylspiro[3<i>H</i>- indole-3,2′-thiazolidine]-2,4′(1<i>H</i>)-diones<i>via</i>3-isatinimines
作者:Manju Pandey、Dushyant Singh Raghuvanshi、Krishna Nand Singh
DOI:10.1002/jhet.12
日期:2009.1
The solvent-free, microwave (MW)-assisted synthesis of a new series of 3′-(aryl/heteroaryl)-1-morpholinomethyl/piperidinomethylspiro[3H-indole-3,2′-thiazolidine]-2,4′(1H)-diones has been achieved in an open vessel. Isatins undergo an easy condensation with various aryl/heteroaryl amines by MW using montmorillonite K10 clay as a solid support to afford Schiff bases , which subsequently undergo smooth
无溶剂的微波(MW)辅助合成一系列新的3'-(芳基/杂芳基)-1-吗啉甲基/哌啶子基甲基螺[3 H-吲哚-3,2'-噻唑烷] -2,4'( 1 H)-二酮已在开放容器中获得。Isatins使用蒙脱土K10粘土作为固体载体,通过MW与各种芳基/杂芳基胺进行轻松缩合,得到席夫碱,随后在纯MW条件下用TGA平稳环化,得到螺噻唑烷酮。使螺环化合物与吗啉/哌啶和甲醛反应,生成相应的曼尼希碱/产量相当高。J.杂环化学,(2009)。