Investigation of asymmetric alcohol dehydrogenase (ADH) reduction of acetophenone derivatives: effect of charge density
作者:Hemantkumar G. Naik、Bahar Yeniad、Cor E. Koning、Andreas Heise
DOI:10.1039/c2ob06870b
日期:——
study the effect of substituent groups of the substrate on the alcoholdehydrogenase (ADH) reductions of aryl–alkyl ketones, several derivatives of acetophenone have been evaluated against ADHs from Lactobacillus brevis (LB) and Thermoanaerobacter sp. (T). Interestingly, ketones with non-demanding (neutral) para-substituents were reduced to secondaryalcohols by these enzymes in enantiomerically pure form
Cyclometalated Complexes of Ruthenium, Rhodium and Iridium as Catalysts for Transfer Hydrogenation of Ketones and Imines
作者:Nicolas Pannetier、Jean-Baptiste Sortais、Jean-Thomas Issenhuth、Laurent Barloy、Claude Sirlin、Alexandre Holuigue、Laurent Lefort、Lavinia Panella、Johannes G. de Vries、Michel Pfeffer
DOI:10.1002/adsc.201100152
日期:2011.10
[Ar(CO)R′′ in which R′′ is a tertiary alkyl group] the best catalyst was a ruthenium compound derived from bis[(R)-1-phenylethyl]amine, allowing the reduction of isobutyrophenone and cyclohexyl phenyl ketone which were both reduced with high enantioselectivities (ees up to 98%). This shows that the cyclometalated compounds have a high substrate specificity. In addition, acyclic and cyclic imines were reduced