... Tetrahedron: Asymmetry. Volume 22, Issue 24, 31 December 2011, Pages 2110–2116. ... Our first attempts were made with [Rh(Me-Duphos)(COD) + ClO 4 − ], one of the catalysts of choice in the reduction of a tetra-substituted double bond, 21, 22 and 23 but this approach was ...