Synthesis of Imidazoles from Ketimines Using Tosylmethyl Isocyanide (TosMIC) Catalyzed by Bismuth Triflate
作者:Mokhtar Fodili、Bellara Nedjar-Kolli、Bernard Garrigues、Christian Lherbet、Pascal Hoffmann
DOI:10.2174/157017809788681275
日期:2009.7.1
the presence of tert-butylamine and catalytic amounts of bismuth(III) triflate. The mechanism is believed to involve formation of an imidazoline intermediate, followed by the methyl group migration, and subsequent aromatization to the imidazole ring.
报道了一系列 1,5-二取代-4-甲基咪唑的制备,基于乙亚胺和 TosMIC 在叔丁胺和催化量的三氟甲磺酸铋 (III) 存在下前所未有的反应。该机制被认为涉及形成咪唑啉中间体,然后是甲基迁移,随后芳构化为咪唑环。