N-Heterocyclic carbene-catalyzed formal cross-coupling reaction of α-haloenals with thiols: organocatalytic construction of sp2 carbon–sulfur bonds
作者:Lin He、Hao Guo、Yuan-Zhen Li、Guang-Fen Du、Bin Dai
DOI:10.1039/c4cc00154k
日期:——
A novel N-heterocyclic carbene (NHC)-catalyzed formal cross-coupling reaction between α-haloenals and thiols was developed. In the presence of 5 mol% NHC precursors and 1.6 equiv. potassium carbonate, various thiols coupled with α-haloenals to produce α-thioenals in 53% to 91% yield and excellent Z-selectivity.
开发了一种新型N-杂环卡宾(NHC)催化的形式交叉偶联反应,涉及α-卤代烯醛和硫醇。在5 mol% NHC前体和1.6 equiv.碳酸钾的存在下,多种硫醇与α-卤代烯醛反应,以53%至91%的产率生成α-硫代烯醛,并具有优异的Z-选择性。