Tryptophan/copper-catalyzed aromatization reaction of chiral cyclohexanones to phenols
Organic & Biomolecular Chemistry(2017)
摘要
By merging organocatalysis with copper catalysis, a highly efficient stereospecific approach for the synthesis of chiral phenols from cyclohexanones has been developed for the first time. The aromatization reaction proceeds through the in situ formation of enone intermediates and further subsequent bromination/dehydrobromination reactions. And a series of functionalized phenol derivatives are obtained in good yields (up to 89%) and good to excellent enantioselectivities (up to 99% ee).
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关键词
chiral cyclohexanones,phenols,copper-catalyzed
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