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Asymmetric α‐Hydroxylation of β‐Indanone Esters and β‐Indanone Amides Catalyzed by C‐2′ Substituted Cinchona Alkaloid Derivatives
Authors:Yakun Wang  Hang Yin  Hai Qing  Jingnan Zhao  Yufeng Wu  Qingwei Meng
Abstract:The highly catalytic asymmetric α‐hydroxylation of β‐indanone esters and β‐indanone amides using peroxide as the oxidant was realized with a new C‐2′ substituted Cinchona alkaloid derivatives. The two enantiomers of α‐hydroxy‐β‐indanone esters could be obtained by simply changing the oxidant. This protocol allows a convenient access to the corresponding α‐hydroxy‐β‐indanone esters and α‐hydroxy‐β‐indanone amides with up to 99% yield and 98% ee.
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Keywords:Cinchona alkaloid derivatives  enantioselectivity  α  ‐hydroxylation  organocatalysis  synthetic methods
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