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Cobalt-catalyzed enantioselective directed C-H alkylation of indole with styrenes
A cobalt–chiral phosphoramidite catalyst promotes enantioselective imine-directed C2-alkylation of Boc-protected indoles with styrenes. The reaction affords 1,1-diarylethane products in moderate to good yields with good ...
Aldimine-directed branched-selective hydroarylation of styrenes
Branching out: A simple and inexpensive cobalt/triarylphosphine catalyst promotes aldimine-directed hydroarylation of styrene with high branched regioselectivity to afford 1,1-diarylethane derivatives in good yields under ...
Cobalt-catalyzed branched-selective addition of aromatic ketimines to styrenes under room-temperature conditions
An improved cobalt-based catalytic system has been developed for the branched-selective addition of aromatic ketimines to styrenes. With an appropriate combination of triarylphosphine and the Grignard reagent, the reaction ...
Directed C–H alkenylation of aryl imines with alkenyl phosphates promoted by a cobalt–N‐heterocyclic carbene catalyst
We report herein an ortho‐C–H alkenylation reaction of aryl imines with alkenyl phosphates promoted by a cobalt–N‐heterocyclic carbene (NHC) catalytic system. While commercially available bulky NHC ligands exhibited only ...