Catalysis of the coupling reaction of aryl chlorides with bis(pinacolato)diboron by tricyclohexylphosphine-cyclopalladated ferrocenylimine complexes

摘要

Tricyclohexylphosphine-cyclopalladated ferrocenylimine complexes were found to be very efficient catalysts for the one-pot borylation/Suzuki cross-coupling reactions of aryl chlorides with bis(pinacolato)diboron.Typically,using 0.5-1.0 mol% of catalyst in the presence of 3.0 equivalents of K2CO3 as base in dioxane at 100 °C provided the corresponding symmetrical biaryls in good to excellent yields.