A simple, mild and environmentally benign procedure for the cleavage of carbon–nitrogen double bonds using NaBrO3 in the presence of [bmim]HSO4

Abstract

A clean, mild and efficient deprotection of oximes, hydrazones, phenyl hydrazones, tosylhydrazones, Schiff's bases and azines to their corresponding carbonyl compounds has been developed using sodium bromate in the presence of acidic ionic liquid [bmim]HSO₄ at 60 °C. The experimental procedure is simple and the products are isolated in high yields. The ionic liquid [bmim]HSO₄ could be easily recovered and recycled.