Organoboron compounds in organic synthesis. 2. asymmetric reduction of dialkyl ketones with (r, r)-or (s, s)-2, 5-dimethylborolane
T Imai, T Tamura, A Yamamuro, T Sato…
Index: Imai, Toshiro; Tamura, Tadashi; Yamamuro, Akira; Sato, Tsuneo; Wollmann, Theodor A.; et al. Journal of the American Chemical Society, 1986 , vol. 108, # 23 p. 7402 - 7404
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Citation Number: 62
Abstract
We wish to record herein the asymmetric reduction of two types of ketones RCORI where R= Me, R'= alkyl (primary, secondary, and tertiary) for type I ketones and R= alkyl (primary), R'= alkyl (primary, secondary, and tertiary) for type 11. The steric demands of R and R1 being similar in both types of ketones. attainment of high enantiomeric excess in the reduction has been extremely challenging.'Successful examples are scarce and scattered (eg, AG in ...
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