The direct insertion of indium powder into alkyl iodides was found to be efficiently catalyzed by a catalytic amount of cobalt(II) bromide (10 mol%). Upon subjection of the thus-formed alkylindium compounds to palladium-catalyzed cross-coupling reactions with a wide range of arylhalides, a series of cross-coupled products could be obtained in moderate to good yields with the tolerance to many important
effectively underwent palladium-catalyzed cross-coupling reactions with a myriad of aryl halides in aqueous media, leading to the cross-coupled products in modest to high yields. The mildness of the formed alkylorganometallics allowed the tolerance to various important functional groups incorporated in both substrates of alkyl iodides and aryl halides.
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).
Photoinduced Palladium-Catalyzed Regio- and Chemoselective Elimination of Primary Alkyl Bromides: A Mild Route to Synthesize Unactivated Terminal Olefins
作者:Sen Yang、Hao Hu、Ming Chen
DOI:10.1021/acs.orglett.3c02980
日期:2023.11.10
yielding unactivated terminalolefins vital in organic synthesis. Achieved through ligand control, the reaction exhibits remarkable regioselectivity and suppresses undesired side reactions, particularly 1,5-hydrogen atom transfer (HAT). The process favors primary alkyl halides while preserving secondary and tertiary alkyl bromides, thereby enabling the incorporation of terminalolefins in complex molecules