Homogeneous transfer-hydrogenation of olefins catalysed by FeII, CoII, and NiII complexes: o- and p-dihydroxybenzene as hydrogen donors
Abstract
In the homogeneous hydrogenation of eight membered cyclo-olefins, o- and p-dihydroxybenzene were superior to alcohols as hydrogen donors, and FeCl2(PPh3)2 and FeBr2(PPh3)2 were the most active catalysts of the complexes MX2(PPh3)2, where M is FeII, CoII, and NiII, and X is Cl–, Br–, and I–.