利用低毒廉价的乙腈溶剂作为新型“CN”源,开发了铜催化下芳基碘化物氰化反应.其中六甲基二硅烷可以促进铜盐对乙腈C—CN键的断裂,而2,2,6,6-四甲基哌啶-氮-氧化物(TEMPO)作为温和的氧化剂,对产率的提高至关重要.在Cu/TEMPO/Si体系下显示出了底物良好的兼容性和反应性.无论是富电子或缺电子取代基的底物都能够兼容.最后根据反应结果和文献推测了反应机理.
A Cu-catalyzed protocol for the cyanation of aryl iodides by using acetonitrile as the "CN" source has been devel- oped, in which the Cu(cat.)/2,2,6,6-tetramethyl-l-piperidinyloxy (TEMPO)/Si system shows good reactivity and generality. Both electron-rich and electron-deficient functional groups can be tolerated in this system.