Formate-Mediated Cross-Electrophile Reductive Coupling of Aryl Iodides and Bromopyridines.

Two catalytic systems for the formate-mediated cross-electrophile reductive coupling of aryl iodides with 6-bromopyridines are described. Using homogenous rhodium or heterogeneous palladium catalysts, the products of reductive biaryl cross-coupling could be formed in moderate yield with excellent levels of chemoselectivity.