Biheteroaromatic diphosphines and their transition metal complexes : synthesis, characterisation and applications in asymmetric catalysis

摘要

Chelating diphosphines supported by biheteroaromatic compounds find increasing application in metal-catalyzed homogeneous catalysis. This review describes recent development in the synthesis and characterisation of atropisomeric biheteroaromatic diphosphines and some of their metal complexes by spectroscopic methods. The applications of the diphosphines in the asymmetric hydrogenation of α-, β-amino acid precursors and ketones, 1,4-arylation of enones, bis-alkoxycarbonylation, Heck reaction and Diels–Alder reaction are also discussed.