A hydroxy group chelation‐assisted stereospecific oxidative cross‐coupling reaction between alkenes was developed under mild reaction conditions. In the presence of palladium catalyst, the alkenes tethered with hydroxy functionality can couple efficiently with electron‐deficient alkenes to form the corresponding multi‐substituted olefin products. The hydroxy group on the substrate could play dual roles
An enantioselective nickel(0)‐catalyzed C−H functionalization of indoles and pyrroles that does not require the typical Lewis basic directing groups is disclosed. The reaction provides access to valuable tetrahydropyridoindoles and tetrahydroindolizines in high yields and enantioselectivity undermild reaction conditions. The process is characterized by a clear endo‐cyclization preference to yield
Novel condensation of ketones with homoallyl alcohols catalyzed by Hg(OTf)2 has been developed, generating a 6-membered ring ether alcohol, bisether, and olefins. The reaction is initiated b hemiacetal formation, and cyclization of the resulting oxonium cation provides the 6-membered ring carbocation as a common intermediate. Thus, it is a catalytic Prins-type condensation of non-activated homoallyl