The kinetic resolution of azaflavanones has been established via RuPHOX-Ru catalyzed asymmetric hydrogenation, providing chiral azaflavanones and azaflavanols in high yields with up to >20:1 dr and 99.7% ee. The...

The efficient RuPHOX-Ru catalyzed asymmetric hydrogenation of α-substituted tetralones via a dynamic kinetic resolution has been achieved for the synthesis of chiral tetrahydronaphthols. The mechanism study indicated that the hydrogenation...

The RuPHOX‐Ru catalyzed asymmetric hydrogenation of diaryl ketones has been established, providing the corresponding chiral diaryl methanols in up to 99% yield and 99% ee. The protocol could be performed on a gram‐scale with a relatively low catalyst loading (2000 S/C) and the resulting products allow for several useful transformations, in particular for the synthesis of chiral drugs, such as, (S)‐Orphenadrine and (S)‐Neobenodine. Deuterium labeling and control experiments revealed that the RuPHOX‐Ru‐catalyzed asymmetric hydrogenation is fully subject to hydrogenation with H2 as the sole hydrogen source.

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