Sequential Generation and Utilization of Radical and Anionic Species with a Novel Manganese−Lead Reducing Agent. Three-Component Coupling Reactions of Alkyl Iodides, Electron-Deficient Olefins, and Carbonyl Compounds
Successive Carbon–Carbon Bond Formation by Sequential Generation of Radical and Anionic Species with Manganese and Catalytic Amounts of PbCl<sub>2</sub>and Me<sub>3</sub>SiCl
moderate reducing system derived from manganesemetal and a catalyticamount of PbCl2 and Me3SiCl. Although the role of PbCl2 is unclear, addition of a catalyticamount of the salt is essential for reducing the iodoalkane. The reaction proceeds with primary, secondary, and tertiary iodoalkanes. Both acrylonitrile and acrylic esters can be employed as activated olefins, while the reaction with an alkyl