One-pot synthesis of nickel porphyrins with 2-pyridine-acetyl substituents: the unexpected Sonogashira cross-coupling products

A convenient, one-step synthesis of nickel porphyrins with 2-pyridine-acetyl substituents is reported. These nickel porphyrins were synthesized by cross-coupling bromonated nickel porphyrins with 2-pyridine-ethyne.