Abstract
AbstractThe double asymmetric Katsuki–Sharpless epoxidation of a conjugated diallyl alcohol affords excellent enantioselectivity (>97 % ee), the product being isolated as the stable p‐nitrobenzoate 5a or tosylate 5b. The optical purities of the chiral epoxides were determined by HPLC on chiral columns, while the molecular structures of compounds 5a and 7 and the absolute configuration of mono‐epoxide 12 were confirmed by X‐ray crystallography. Possible π–π stacking interaction has been evaluated by ab initio calculation.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)
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