Ac obalt-promoted electrochemical 1,2-diarylation of alkenes with electron-rich aromatic hydrocarbons via direct dual CÀHf unctionalizations is described, whiche mploys ar adical relay strategy to produce polyaryl-functionalized alkanes.S imply by using graphite rod cathode instead of platinum plate cathode,c hemoselectivity of this radical relay strategy is shifted to the dehydrogenative [2+ +2+ +2] cycloaddition via 1,2-diarylation, annulation, and dehydrogenation cascades leading to complex 11,12-dihydroindolo[2,3-a]carbazoles.M echanistical studies indicate that ak ey step for the radical relayp rocesses is transformations of the aromatic hydrocarbons to the aryl sp 2-hybridized carbon-centered radicals via deprotonation of the corresponding aryl radical cation intermediates with bases.

We have developed a new radical-mediated alkoxypolyhaloalkylation of styrene with polychloroalkanes and alcohols for the facile synthesis of complex polyhaloalkanes. 4-Methoxybenzenediazonium tetrafluoroborate is a good radical initiator for this transformation....

A novel photoredox-catalyzed C(sp3)-C(sp3) cross-coupling between N-arylamines and cycloketone oxime esters under mild conditions has been accomplished. The redox-neutral reaction proceeds good functional group tolerance and excellent regioselectivity without any...