Synthesis of β-aryl substituted porphyrins by palladium-catalysed cross-coupling reactions

Abstract
β-Bromoporphyrins undergo Suzuki cross-coupling reactions with aryl boronic acids to give β-arylporpyrins in high yields and X-ray analysis shows that H2TPP(Ph)42a(TPP = tetraphenylporphyrin) is centrosymmetric and possesses a hydrogen-bonded inner core.