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The Swern Oxidation: First example of direct oxidation of 2-pyrazolines with "activated" DMSO
Journal article   Peer reviewed

The Swern Oxidation: First example of direct oxidation of 2-pyrazolines with "activated" DMSO

Naoufel Ben Hamadi and Moncef Msaddek
Comptes rendus. Chimie, Vol.14(11), pp.997-1001
01/11/2011
DOI: https://doi.org/10.1016/j.crci.2011.05.009

Abstract

Chemistry Chemistry, Multidisciplinary Physical Sciences Science & Technology
1,3-Dipolar cycloaddition of 2-diazopropane to conjugated dienes 1 and alpha,beta-unsaturated ketones 5 is taking place regiospecifically to give cycloadduit 4 and 6. The reaction of 2-pyrazolines derivatives with dimethylsulfoxide and oxalyl chloride under Swern conditions led to a pyrazolenines 7 and 8. (C) 2011 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.

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