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Osmium(II) CNN Pincer Complexes as Efficient Catalysts for Both Asymmetric Transfer and H 2 Hydrogenation of Ketones

2008; Wiley; Volume: 47; Issue: 23 Linguagem: Inglês

10.1002/anie.200800339

1521-3773

Walter Baratta, Maurizio Ballico, Giorgio Chelucci, Katia Siega, Pierluigi Rigo,

Metal-Organic Frameworks: Synthesis and Applications

Catalysis at a pinch: Osmium CNN pincer complexes [OsCl(CNN)P2] (see graphic) are extremely active and productive catalysts for both the transfer and asymmetric hydrogenation of ketones (TOF≈106 h−1 and TON≈105). High enantioselectivity is achieved in the presence of only 0.005–0.002 mol % of the chiral osmium derivatives. [OsX(CNN)(dppb)] species with X=H and OR are involved in these catalytic TH and HY reactions. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2008/z800339_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.