Taher, Abu Lee, Kyo Chul Han, Hye Ji Kim, Dong Wook Pyrene-Tagged Ionic Liquids: Separable Organic Catalysts for S<sub>N</sub>2 Fluorination We prepared pyrene-substituted imidazolium-based ionic liquids (PILs) as organic catalysts for the S<sub>N</sub>2 fluorination using alkali metal fluoride (MF). In this system, the PIL significantly enhanced the reactivity of MF due to the phase-transfer catalytic effect of the imidazolium moiety as well as the metal cation−π (pyrene) interactions. Furthermore, this homogeneous catalyst PIL was easily separated from the reaction mixture using reduced graphene oxide by π–π stacking with the pyrene of PIL. graphene oxide;reaction mixture;S N 2 Fluorination;pyrene-substituted imidazolium-based;S N 2 fluorination;catalyst PIL;MF;alkali metal fluoride;imidazolium moiety;Separable Organic Catalysts 2017-06-19
    https://acs.figshare.com/articles/journal_contribution/Pyrene-Tagged_Ionic_Liquids_Separable_Organic_Catalysts_for_S_sub_N_sub_2_Fluorination/5119975
10.1021/acs.orglett.7b01064.s001