Enantioselective Hydrogenation of Aromatic Ketones Catalyzed by a Mesoporous Silica-Supported Iridium Catalyst
β Scribed by Guohua Liu; Mei Yao; Jianyao Wang; Xiaoquan Lu; Mouming Liu; Fang Zhang; Hexing Li
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 400 KB
- Volume
- 350
- Category
- Article
- ISSN
- 1615-4150
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We are grateful to the Fonds der Chemischen Industrie for financial support, and S.-M.L. thanks the Alexander von Humboldt Foundation for a postdoctoral fellowship. We also acknowledge Dr. C. Jaekel (BASF AG) for pointing out Refs. [5h] and [6].
A new kind of inorganic polymer, silica-supported polysilazane (Si-N), and its platinum complex (Si-N-Pt) were prepared and characterized by X-ray photoelectron spectroscopy. It was found that Si-N-Pt can catalyze hydrogenation of m-xylene under mild conditions (30-50"C, 1 atrn). The products of the
## Abstract An efficient and optically active, bifunctional tetraaza ligand (2__S__)β__N__β{(1__R__,2__R__)β2β[(__S__)βpyrrolidineβ2βcarboxamido]β1,2βdiphenylethyl}pyrrolidineβ2βcarboxamide has been developed for the addition of trimethylsilyl cyanide (TMSCN) to ketones. The bifunctional catalyst s