A New Mild Method for the C-Acylation of Ketone Enolates. A Convenient Synthesis of β-Keto-Esters, -Thionoesters, and -Thioesters
作者:Karl J. Hale、Milosz Grabski、Jakub T. Flasz
DOI:10.1021/ol303324a
日期:2013.1.18
A new method for ketone enolate C-acylation is described which utilizes alkyl pentafluorophenylcarbonates, thiocarbonates, and thionocarbonates as the reactive acylating agents, and MgBr2·Et2O, DMAP, and i-Pr2NEt as the reagents for enolization. A wide range of ketones have been observed to undergo clean C-acylation via this protocol.
描述了一种新的酮烯醇C-酰化方法,该方法利用烷基五氟苯基碳酸酯,硫代碳酸酯和硫代碳酸氢酯作为反应性酰化剂,并使用MgBr 2 ·Et 2 O,DMAP和i -Pr 2 NEt作为烯醇化试剂。通过该方案,已经观察到各种各样的酮经历了清洁的C-酰化。