Cascade dearomatization of N-substituted tryptophols via Lewis acid-catalyzed Michael reactions.

Abstract

Lewis acid-catalyzed cascade dearomatization of N-substituted tryptophols via Michael addition reaction was developed. The generality of the method has been demonstrated by the synthesis of versatile furoindoline derivatives with a quaternary carbon center in good yields. 
DOI: 10.1039/c2ob26139a

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