Chiral Pincer Ruthenium and Osmium Complexes for the Fast and Efficient Hydrogen Transfer Reduction of Ketones
作者:Walter Baratta、Fabio Benedetti、Alessandro Del Zotto、Lidia Fanfoni、Fulvia Felluga、Santo Magnolia、Elisabetta Putignano、Pierluigi Rigo
DOI:10.1021/om1004918
日期:2010.8.23
were found to efficiently catalyze the asymmetric transfer hydrogenation of acetophenone in 2-propanol at 60 °C and in the presence of NaOiPr. On the basis of these data, the 2-naphthyl ruthenium and osmiumderivatives [RuCl(CNN)((R,S)-Josiphos*)] (8) (HCNN = (S)-1g) and [OsCl(CNN)(PP)] (PP = (R,S)-Josiphos, 9, and (R,S)-Josiphos*, 10) were isolated from [MCl2(PPh3)3], (R,S)-Josiphos diphosphines, and