Ti-Catalyzed Radical Alkylation of Secondary and Tertiary Alkyl Chlorides Using Michael Acceptors
作者:Xiangyu Wu、Wei Hao、Ke-Yin Ye、Binyang Jiang、Gisselle Pombar、Zhidong Song、Song Lin
DOI:10.1021/jacs.8b08605
日期:2018.11.7
Alkylchlorides are common functional groups in synthetic organic chemistry. However, the engagement of unactivated alkylchlorides, especially tertiaryalkylchlorides, in transition-metal-catalyzed C-C bond formation remains challenging. Herein, we describe the development of a TiIII-catalyzed radical addition of 2° and 3° alkylchlorides to electron-deficient alkenes. Mechanistic data are consistent
In the presence of phenylsilane and a catalytic amount of indium(III) acetate, organic iodides added to electron-deficientalkenes in ethanol at room temperature. Both simple and functionalized organic iodides were applicable to this reaction. A plausible reaction mechanism involves the formation of indium hydride species by hydride transfer from silicon to indium and an indium hydride-mediated radical