Direct preparation of thiazoles, imidazoles, imidazopyridines and thiazolidines from alkenes
作者:Timothy J. Donohoe、Mikhail A Kabeshov、Akshat H. Rathi、Ian E. D. Smith
DOI:10.1039/c1ob06587d
日期:——
A range of heterocycles, namely thiazoles, imidazoles, imidazopyridines, thiazolidines and dimethoxyindoles, have been synthesised directly from alkenesvia a two-step ketoidoination/cyclisation protocol. The alkene starting materials are themselves readily accessible using many different and well-established approaches, and allow access to a variety of heterocycles with excellent yields and regioselectivity.
通过两步酮亚胺化/环化方案,一系列杂环化合物,包括噻唑、咪唑、咪唑并吡啶、噻唑烷和二甲氧基吲哚,已直接从烯烃合成。烯烃起始原料可通过多种不同且成熟的途径轻松获得,并能以优异的产率和区域选择性制备多种杂环化合物。