Journal of the American Chemical Society · 2011 · 431 citations · 38 references
Natural SciencesChemistryCatalysisOrganic ChemistryCatalytic MechanismsHeterocycle SynthesisHeterocyclic ChemistryHeterocyclic CompoundsOrganic SynthesisHeterocycle FunctionalizationPalladium CatalystsSix-membered HeterocyclesTransition-metal-catalyzed Heterocycle Synthesis
A method for five- and six-membered heterocycle formation by palladium-catalyzed C-H/N-H coupling is presented. The method employs a picolinamide directing group, PhI(OAc)(2) oxidant, and toluene solvent at 80-120 °C. Cyclization is effective for sp(2) as well as aliphatic and benzylic sp(3) C-H bonds.
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