Asymmetric Hydrogenation of Ketones with H<sub>2</sub>and Ruthenium Catalysts Containing Chiral Tetradentate S<sub>2</sub>N<sub>2</sub>Ligands
作者:Ruth Patchett、Iris Magpantay、Lionel Saudan、Christoph Schotes、Antonio Mezzetti、Francesco Santoro
DOI:10.1002/anie.201304844
日期:2013.9.23
Getting more for less: In the presence of H2 and a base, air‐ and moisture‐tolerant RuII complexes catalyze the hydrogenation of ketones and aldehydes with excellent activity and chemoselectivity, and with enantioselectivity of up to 95 % under mild conditions. The ratio of substrate to catalyst can be lowered to 106:1. The reactions tolerate scale‐up and can be carried out with almost no solvent. A base‐free
事半功倍:在H 2和碱的存在下,耐空气和潮气的Ru II络合物以优异的活性和化学选择性,在温和条件下的对映选择性高达95%,催化酮和醛的氢化反应。底物与催化剂的比例可以降低至10 6:1。该反应可按比例放大,几乎可以在没有溶剂的情况下进行。无碱方法可用于对碱敏感的底物。