Dual-Sulfonated Dipyridinium Phosphotungstate Catalyst for Liquid-Phase Beckmann Rearrangement of Cyclohexanone Oxime
- D. Mao, Z. Long, Y. Zhou, J. Li, X. Wang, J. Wang
- RSC Advances,
- 2014
The Effective Catalyst (Cobalt Salt/Lewis Acid) for Beckmann Rearrangement of Cycloalkanone Oximes to Lactams under Mild Conditions
- Published 2015
Abstract
The Beckmann rearrangement of cyclohexanone oxime was achieved by the combined use of cobalt salt and Lewis acids co-catalysts (each 10 mol%). Various combinations of cobalt salts and Lewis acids gave lactams in a satisfactory yield under mild conditions. This method makes it possible to reduce undesirable byproducts.