Bipyridinium Ionic Liquid-Promoted Cross-Coupling Reactions between Perfluoroalkyl or Pentafluorophenyl Halides and Aryl Iodides
作者:Ji-Chang Xiao、Chengfeng Ye、Jean'ne M. Shreeve
DOI:10.1021/ol050426o
日期:2005.5.1
A new room-temperature ionic liquid has been synthesized from 2,2'-bipyridine. This liquid improved the copper-catalyzed cross-coupling reactionsbetween perfluoroalkyl or pentafluorophenyl halides and aryl iodides. Good recyclability using this solvent system was observed.
A mild method of converting arylamines into perfluoroalkylatedarenes is described. Relatively stable RFCu(CH3CN) complexes are used as perfluoroalkylating agents, which react smoothly with arenediazoniumsalts to produce various perfluoroalkylarenes in good yields. Based on the results of clock trapping experiments with diallyl ether, a radical process might be involved in the reaction.