Abstract Cerium (IV) ammonium nitrate-mediated oxidative radical reactions are carried out in the presence of ionic liquids, including 1-butyl-3-methylimidazolium tetrafluoroborate, for the first time. The presence of the ionic liquid not only increases the rate and yield of reactions in dichloromethane but also extends the range of 1, 3-dicarbonyl precursors, which can be utilized in these carbon–carbon bond-forming reactions.
[Nishino, Hiroshi; Tategami, Shin-ichi; Yamada, Takashi; Korp, James D.; Kurosawa, Kazu Bulletin of the Chemical Society of Japan, 1991 , vol. 64, # 6 p. 1800 - 1809]