Although the hydrosilation of ketones is catalyzed readily by a number of transitionmetal compounds, l organic esters have previously been regarded as inert.'Recently, Buchwald and co-workers established that catalytic quantities of the titanium complexes CpzTiClzh- BuLi or Ti (Oi-Pr) q and (EtO), SiH reduce esters to alcohols (after aqueous workup).? We now report that manganese acetyl complexes (L)(C0) 4MnC (0) CH3 [L= PPhj,(1); CO,(2)] ...