Synthesis 2017; 49(12): 2663-2676
DOI: 10.1055/s-0036-1588170
paper
© Georg Thieme Verlag Stuttgart · New York

Phosphite-Mediated Reductive Cross-Coupling of Isatins and Nitro­styrenes

Somayeh Motevalli
Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA   Email: jsj@unc.edu
,
Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA   Email: jsj@unc.edu
› Author Affiliations
Supported by: National Institute of General Medical Sciences (R35 GM118055)
Further Information

Publication History

Received: 20 February 2017

Accepted after revision: 14 March 2017

Publication Date:
02 May 2017 (online)


Abstract

A new reductive coupling reaction between N-alkylisatins, dimethyl phosphite, and nitrostyrenes has been developed. The reaction relies on Pudovik addition, subsequent phosphonate–phosphate rearrangement, and Michael-type addition of a transient carbanion on the indolinone with β-nitrostyrenes. This protocol introduces a convenient and versatile method for the construction of polyfunctionalized tertiary phosphates under mild conditions. Chiral general bases catalyze the title reaction with promising levels of enantioselectivity.

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