Publication Type : Journal Article
Publisher : Tetrahedron Letters
Source : Tetrahedron Letters, Volume 48, Number 51, p.9059-9062 (2007)
Url : https://www.sciencedirect.com/science/article/pii/S0040403907020461
Keywords : -Isopropylimidazolium bromide, -Methylimidazolium bromide, Anion exchange, Beckmann rearrangement, Reaction medium, Room temperature ionic liquids (RTILs), ε-Caprolactam
Campus : Coimbatore
School : School of Engineering
Department : Sciences
Year : 2007
Abstract : Six different room temperature ionic liquids (RTILs) based on N-methyl or N-isopropyl imidazolium cations with counteranions, such as BF4-, PF6-, and OTf−, have been synthesized by exchanging the counteranions of the corresponding N-methyl or N-isopropylimidazolium bromides using appropriate salts such as NH4BF4, KPF6, and AgOTf. Catalytic amounts of these ionic liquids (ILs) have been used as the reaction medium for the Beckmann rearrangement of oximes to amides in the presence of PCl5. A moderate to good conversion of oximes to amides in all the six ILs was observed.
Cite this Research Publication : Dr. Elango K., Srirambalaji, R., and Anantharaman, G., “Synthesis of N-alkylimidazolium salts and their utility as solvents in the Beckmann rearrangement”, Tetrahedron Letters, vol. 48, pp. 9059-9062, 2007.