 An effective chiral dirhodium catalyst is Rh2(MPPIM)4 with MPPIM (Methyl PhenylPropyl IMidazolidinecarboxylato) asymmetric ligand.Most successful reactions are intramolecular within geometrically rigid systems, as pioneered by Wenkert (1982)  and Taber (1982).The Wee research group has compared the use of different catalysts