[reaction: see text] Asymmetric reduction of ketimines 1 with trichlorosilane can be catalyzed by a new N-methyl L-valine derived Lewis basic organocatalyst, such as 4d, with high enantioselectivity. The structure-reactivity investigation suggests hydrogen bonding and arene-arene interactions between the catalyst
The Journal of organic chemistry, 72(4), 1315-1325 (2007-02-10)
Asymmetric reduction of ketimines 1 with trichlorosilane can be catalyzed by N-methylvaline-derived Lewis-basic formamides 3a-d with high enantioselectivity (< or =95% ee) and low catalyst loading (1-5 mol %) at room temperature in toluene. Appending a fluorous tag, as in
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