S. Narasimhan et al., A SIMPLE ALKENE-CATALYZED REDUCTION OF AROMATIC ESTERS TO ALCOHOLS BYZINC BOROHYDRIDE, Synthetic communications, 27(3), 1997, pp. 385-390
Reactivity of Zn(BH4)(2) was modified by adding cyclohexene to achieve
the reduction of aromatic esters to alcohols which reaction was not p
ossible previously because of the mild nature of the reagent. Function
al groups like Cl and nitro were tolerated.