Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... A unique mode of metal hydride reduction of unsaturated ketones is described which proceeds with a high degree of regio- and stereocontrol. ... LiAlH 4 or Red-Al® reduction of α,β-unsaturated ketones can proceed via a 1,2–3,4 mode of reduction. In certain cases up to three ...