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[3 + 2]-Annulations of N-hydroxy allenylamines with nitrosoarenes: One-pot synthesis of substituted indole products
Journal article   Peer reviewed

[3 + 2]-Annulations of N-hydroxy allenylamines with nitrosoarenes: One-pot synthesis of substituted indole products

Pankaj Sharma and Rai-Shung Liu
Organic Letters, Vol.18(3), pp.412-415
05/02/2016

Abstract

In the presence of O 2 and an IPrCuCl additive (5 mol %), [3 + 2]-annulation reactions of N-hydroxyaniline with nitrosobenzenes in cold toluene form isoxazolidin-5-ol derivatives. Heating the same reaction mixture with DBU in toluene affords highly functionalized indole products efficiently. This method provides short synthesis of several bioactive molecules including WIN 48098, WIN 53365, and JWH 015.

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