A Metal-Free, Three-Component Manifold for the C2-Functionalization of 1-Substituted Imidazoles Operating ‘On Water’
作者:Pedro de Armas、Fernando García-Tellado、Fabio Cruz-Acosta
DOI:10.1055/s-0030-1258561
日期:2010.10
A metal-free, three-component process for the C2-functionalization of N-alkylated imidazoles is reported The multicomponent manifold operates under ‘on water’ conditions through the formation of a water-stable (permanent) nucleophilic imidazole carbene (imidazolium ylide). Whereas the incorporated vinyl ether functionality is a convenient handle for further chemical manipulation of the functionalized heterocycle (complexity generation), the use of water as the reaction media gives it a bonus of added benefits in terms of safety, bench-friendly processing and environmental care.
报道了一种无金属的三组分反应过程,用于对N-烷基咪唑的C2位进行功能化。该多组分体系在“水相”条件下运行,通过形成水稳定的(永久性)亲核咪唑卡宾(咪唑铵亚胺)。集成的乙烯醚功能团为功能化杂环的进一步化学操作(复杂性生成)提供了便利的操作手段,而使用水作为反应介质则在安全性、实验室友好性和环保方面带来了额外的好处。