Published as part of the Special Topic Domino C–H Functionalization Reaction/Cascade Catalysis
Abstract
A highly diastereoselective three-component C–H bond addition across butadiene and activated ketones is described. This transformation provides homoallylic tertiary alcohols through the formation of two C–C σ-bonds and with complete selectivity for an E-alkene isomer. The reaction exhibits good scope with respect to activated ketone inputs, including highly strained cyclic and electron-deficient cyclic and acyclic ketones. Additionally, high diastereoselectivities were achieved for alcohols prepared from unsymmetrical ketones.
Key words
C–H activation - cobalt - ketones - diastereoselectivity - multicomponent reaction - homogeneous catalysis