Palladium-catalyzed coupling approach


Heterocyclic systems with a quinoline scaffold represent privileged scaffold in medicinal chemistry and drug discovery due to the broad biological activities displayed by these derivatives. Reactivity of C2-quinoline substituted furan, tiophene and pyrrole derivatives in palladium-catalyzed direct C–H arylation were investigated. It has been shown that kinetic data points towards the electrophilic metalation-deprotonation reaction mechanism of the transformation. In collaboration with M. Lautens (University of Toronto, Canada) and F. Glorius (Westfälische Wilhelms-Universität Münster, Germany) research groups the one-pot synthesis of a broad variety of dihydrofuroquinolines, dihydrothienoquinolines, and dihydro-benzoquinolines was developed. The combination of the Rh(I)-catalyzed hydroarylation of vinylpyridines with the Pd(0)/Pd(II)-catalyzed direct C−H arylation in a Multicomponent-Multicatalyst Reaction (MC)2R could be used to develop an efficient and step-economic protocol for the rapid construction of molecular complexity.