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American Chemical Society, Journal of Organic Chemistry, 22(73), p. 9151-9154, 2008

DOI: 10.1021/jo801867w

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A Versatile Synthesis of Unsymmetrical 3,3′-Bioxindoles: Stereoselective Mukaiyama Aldol Reactions of 2-Siloxyindoles with Isatins

Journal article published in 2008 by J. Michael Ellis ORCID, Larry E. Overman, Huw R. Tanner, Jocelyn Wang
This paper is available in a repository.
This paper is available in a repository.

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Abstract

A new synthesis of 3,3'-bioxindoles is reported that is well suited for the preparation of unsymmetrical structures. In the key step, 3-hydroxy-3,3'-bioxindoles are constructed by Mukaiyama aldol reaction of 2-siloxyindoles with isatins. These tertiary carbinols are formed in high diastereoselectivities, with substitution at various positions of the isatin and the 2-siloxyindole being tolerated.