Tetrahedron

Mononuclear rearrangement of heterocycles in ionic liquids catalyzed by copper (II) salts

F D'Anna, V Frenna, S Marullo, R Noto, D Spinelli

Index: D'Anna, Francesca; Frenna, Vincenzo; Marullo, Salvatore; Noto, Renato; Spinelli, Domenico Tetrahedron, 2008 , vol. 64, # 49 p. 11209 - 11217

Full Text: HTML

Citation Number: 16

Abstract

The reactivity of E-and Z-phenylhydrazones of 3-benzoyl-5-phenyl-1, 2, 4-oxadiazole in the presence of CuCl2 and Cu (ClO4) 2· 6H2O has been studied in four imidazolium ionic liquids [bmim][X](X= BF4−, PF6−, SbF6− and CF3SO3−). The reaction may follow different mechanistic patterns, depending on the nature of the ionic liquid anion, accounting for both qualitative and kinetic data. In the presence of CuCl2, two processes take place at the ...