Synthesis of 2-iminothiazolidin-4-ones using guanine functionalized SBA-16 as a solid base catalyst
作者:Radha Gupta、Devendra Deo Pathak
DOI:10.1016/j.tetlet.2021.153497
日期:2021.11
a one-pot three-component tandem annulation approach is described for the synthesis of 2-iminothiazolidin-4-ones by the reaction of aromatic/aliphatic amines, aryl isothiocyanates, and ethyl bromoacetate, catalysed by guanine-functionalized SBA-16, [SBA-16@G], as an efficient and recyclable heterogeneous solid base catalyst. The methodology is simple and offers a broad-substrate scope under mild reaction
描述了一锅三组分串联环化方法的第一个例子,用于通过芳族/脂肪胺、异硫氰酸芳基酯和溴乙酸乙酯的反应合成 2-iminothiazolidin-4-ones,由鸟嘌呤官能化 SBA-催化16,[SBA-16@G],作为一种高效且可回收的多相固体碱催化剂。该方法简单,在温和的反应条件下提供了广泛的底物范围。