Reduction of olefin is an important transformation in organic chemistry and is very well reviewed in the literature. [ 1 1. (a) Hudlicky , M. Reductions in Organic Chemistry ; John Wiley & Sons : New York , 1984 ; (b) Raylander , PN Hydrogenation Methods ; Academic Press : San Diego , 1994 ; (c) Kendall, JK; Fisher, TH An improved synthesis of 6,8-dimethoxy-3-methylisocoumarin , a fungal metabolite precursor. J. Org. Chem. 1989, 54, 4218–4220; (d) Woodword RB; ...