Microwave-Assisted Domino Reactions of Propargylamines with Isothiocyanates: Selective Synthesis of 2-Aminothiazoles and 2-Amino-4-methylenethiazolines
作者:Daniele Castagnolo、Nicoló Scalacci、Chiara Pelloja、Marco Radi
DOI:10.1055/s-0035-1561985
日期:——
versatile microwave-assisted protocol for the synthesis of 2-aminothiazoles has been developed. The domino reaction of propargylamines and isothiocyanates in the presence of catalytic PTSA leads to the selective synthesis of 2-aminothiazoles at temperatures above 130 °C and in a few minutes. The same reaction carried out at lower temperatures leads to the formation of the tautomeric 2-amino-4-methylenethiazolines
已开发出一种用于合成 2-氨基噻唑的简单且通用的微波辅助方案。在催化 PTSA 存在下炔丙胺和异硫氰酸酯的多米诺反应导致在 130°C 以上的温度下在几分钟内选择性合成 2-氨基噻唑。在较低温度下进行的相同反应导致形成互变异构的 2-氨基-4-亚甲基噻唑啉。