Ni-Catalyzed Sonogashira Coupling of Nonactivated Alkyl Halides: Orthogonal Functionalization of Alkyl Iodides, Bromides, and Chlorides
作者:Oleg Vechorkin、Delphine Barmaz、Valérie Proust、Xile Hu
DOI:10.1021/ja906040t
日期:2009.9.2
Ni-catalyzed Sonogashira coupling of nonactivated, beta-H-containing alkyl halides, including chlorides, is reported. The coupling is tolerant to a wide range of functional groups, including ether, ester, amide, nitrile, keto, heterocycle, acetal, and aryl halide, in both coupling partners. The coupling can be selective for a specific C-X bond (X = I, Br, Cl) and allows for orthogonal functionalization
The Nickel/Copper-Catalyzed Direct Alkylation of Heterocyclic CH Bonds
作者:Oleg Vechorkin、Valérie Proust、Xile Hu
DOI:10.1002/anie.200907040
日期:——
protocol for the cross‐coupling of non‐activated alkyl halides with heterocyclic CH bonds has been developed. The transformation is chemo‐ and regioselective and many functional groups on both coupling partners are tolerated. The method employs cheap nickel/copper catalysts, and expands significantly the scope of CH functionalization (see scheme).
Synthesis of 2,2-disubstituted-6-cyanocyclohexanones
作者:Stuart S. Kulp
DOI:10.1139/v67-315
日期:1967.9.1
The synthesis of a series of 2,2-disubstituted-6-cyanocyclohexanones by hydrolysis of the precursor 3,3-disubstituted-2-amino-1-cyanocyclohexenes (2,2-disubstituted-6-cyanocyclohexanoneimines) is described. The appropriate disubstituted acetonitriles reacted with 1-chloro-4-bromobutane to give the chloro nitriles, which were converted into the 2,2-disubstituted-heptanedinitriles for cyclization. The