Organocatalytic Deuteration Induced by the Dynamic Covalent Interaction of Imidazolium Cations with Ketones
作者:Konstantin I. Galkin、Evgeniy G. Gordeev、Valentine P. Ananikov
DOI:10.1002/adsc.202001507
日期:2021.3.2
organocatalytic approach based on the dynamic covalent interaction of imidazolium cations with ketones. A reaction of N‐alkyl imidazolium salts with acetone‐d6 in the presence of oxygenated bases generates a dynamic organocatalytic system with a mixture of protonated carbene/ketone adducts acting as H/D exchange catalysts. The developed methodology of the pH‐dependent deuteration showed high selectivity of labeling
在本文中,我们提出了一种基于咪唑鎓阳离子与酮的动态共价相互作用的新的有机催化方法。N-烷基咪唑鎓盐与丙酮d 6在含氧碱的存在下反应生成动态有机催化体系,质子化的卡宾/酮加合物作为H / D交换催化剂。已开发的pH依赖性氘代方法显示出较高的标记选择性和良好的手性官能团耐受性。在这里,我们报告了一种有效的无金属氘化的独特方法,该方法可以标记各种类型的α-酸性化合物而不会造成痕量金属污染。