Aryl radicals by copper(II) oxidation of hydrazines: A new method for the oxidative and reductive arylation of alkenes
作者:Teresa Varea、Maria E. González-Núñez、Javier Rodrigo-Chiner、Gregorio Asensio
DOI:10.1016/s0040-4039(01)80781-4
日期:1989.1
A new source of aryl radicals interesting from the preparative point of view has been found in the reaction of arylhydrazines and copper(II) sulfate. The process allows selectively both the reductive and oxidative arylation of alkenes.
Chloride based ionic liquids as promoting agents for Meerwein reaction in solventless conditions
作者:Piero Mastrorilli、Cosimo F. Nobile、Nicola Taccardi
DOI:10.1016/j.tetlet.2006.04.072
日期:2006.7
Chloride based ionic liquids were used as chloride source in Meerweinreaction either in [bmim]X (bmim = 1-butyl-3-methylimidazolium, X = BF4, PF6) as solvents or in solventless conditions. Satisfactory yields (49–71%) with diversely substituted diazonium salts were achieved by using 1,3-dibutylimidazolium chloride in the presence of a bimetallic Zn/Cu catalyst.