Organolithium addition to styrene and styrene derivatives: scope and limitations
作者:Xudong Wei、Paul Johnson、Richard J. K. Taylor
DOI:10.1039/a910195k
日期:——
Styrene and a range of aryl-substituted styrenederivatives are shown to undergo efficient carbolithiation–trapping reactions in diethyl ether at −78 to −25 °C. The reactivities of different types of organolithium reagents were found to be: tertiary, secondary > primary; ≫ alkenyl, methyl, phenyl. Electron donating groups (e.g. methoxy and dialkylamino) at the ortho- or para- positions of the benzene
Electroreductive Carbofunctionalization of Alkenes with Alkyl Bromides via a Radical-Polar Crossover Mechanism
作者:Wen Zhang、Song Lin
DOI:10.1021/jacs.0c08532
日期:2020.12.9
variety of alkene functionalization reactions, most of which proceed via an anodic oxidation pathway. In this report, we further expand the scope of electrochemistry to the reductive functionalization of alkenes. In particular, the strategic choice of reagents and reaction conditions enabled a radical-polar crossover pathway wherein two distinct electrophiles can be added across an alkene in a highly