Asymmetric transfer hydrogenation over Ru-TsDPEN catalysts supported on siliceous mesocellular foam.
نویسندگان
چکیده
A siliceous mesocellular foam-immobilized Ru-TsDPEN complex exhibited excellent catalytic reactivity, enantioselectivity and reusability in the asymmetric transfer hydrogenation of an imine and ketones.
منابع مشابه
The importance of the N-H bond in Ru/TsDPEN complexes for asymmetric transfer hydrogenation of ketones and imines.
Ru(II) complexes of TsDPEN containing two alkyl groups on the non-tosylated nitrogen atom are poor catalysts for asymmetric transfer hydrogenation of ketones and imines; this observation provides direct evidence for the importance of the N-H interaction in the transition state for ketone reduction.
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Asymmetric transfer hydrogenation (ATH) has been widely used as an efficient and practical method for preparation of optically pure secondary alcohols that are important key intermediates for the synthesis of a large number of pharmaceutical substances. One of the most attractive catalyst system is based on Ru-TsDPEN (TsDPEN= N-(p-tolylsulfonyl)-1,2diphenylethylenediamine) complexes, which was ...
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ورودعنوان ژورنال:
- Chemical communications
دوره 18 شماره
صفحات -
تاریخ انتشار 2007