1. For unusually high asym metric induction in an oligomerization reaction see;Consiglio;Chim Acta Chem Int Ed,1973
2. cited therein private communication in press;Volger;Chem Commun Tetrahedron Letters,1969
3. Pays;Vrieze;Chem Chem Conf Coord Chem,1966
4. NOVEL APPROACHES TO ALKYLATIONS;Trost;Org Chem Commun Tetrahedron Letters Tetrahedron Tetrahedron Letters,1974