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■ N-Bromosuccinimide (NBS) as Promoter for Acylation of Sydnones in the Presence Acetic Anhydride under Neutral Conditions

Hassan Ghasemnejad-Bosra,* Mina Haghdadi, and Issa Gholampour-Azizi

*Islamic Azad University-Babol Branch, School of Science, P.O. Box 755, Babol, Iran

Abstract

Various 4 - acetyl sydnones (2) can be prepared by reaction of the corresponding 3-aryl sydnones (1) with acetic anhydride at ~110 °C promoted by N-Bromosuccinimide (NBS) as an effective reagent for acylation of sydnones under neutral conditions in satisfactory yields.