Beckmann rearrangement of several oximes catalyzed by metaboric acid was studied in room temperature ionic liquids. Especially for conversion of cyclohexanone oxime into e-caprolactam, excellent conversion and selectivity were obtained.

★★★☆☆ Keywords: Beckmann rearrangement; Oxime; Metaboric acid; Ionic liquid

★★★☆☆ S. Guo, Y. Deng / Catalysis Communications 6 (2005) 225–228.