Synthesis of N-Acyl Carbamates and Oxazolidinones Using HClO4-SiO2 as Catalyst Under Solvent-Free Conditions
LJ Yang, Y Yang, R Dong
Index: Yang, Li Juan; Yang, Yuping; Dong, Ruoyi Asian Journal of Chemistry, 2011 , vol. 23, # 3 p. 1085 - 1087
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Abstract
Abstract Silica supported perchloric acid catalyzes efficiently the reaction of carbamates and oxazolidinones with anhydrides in the presence of silica sulfuric acid under solvent-free conditions. All the reactions were done at room temperature and the N-acyl carbamates and oxazolidinones were obtained with high yields and purity via an easy work-up procedure. This method is attractive and is in a close agreement with green chemistry.
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