2,2'-Bis(diphenylphosphino)-1,1’-biphenyl (CAS# 84783-64-2) is a chelating phosphine and has been used to study the effects of bite angles on the chemical and physical properties of transition metal complexes. 2,2'-Bis(diphenylphosphino)-1,1’-biphenyl appears as a catalytic ligand in Ni- and Pd-Catalyzed cross-electrophile coupling reactions to form highly substituted 1,3-dienes.