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Pyrene-Tagged Ionic Liquids: Separable Organic Catalysts for SN2 Fluorination
Organic Letters ( IF 4.9 ) Pub Date : 2017-06-20 00:00:00 , DOI: 10.1021/acs.orglett.7b01064
Abu Taher 1 , Kyo Chul Lee 2 , Hye Ji Han 1 , Dong Wook Kim 1
Organic Letters ( IF 4.9 ) Pub Date : 2017-06-20 00:00:00 , DOI: 10.1021/acs.orglett.7b01064
Abu Taher 1 , Kyo Chul Lee 2 , Hye Ji Han 1 , Dong Wook Kim 1
Affiliation
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We prepared pyrene-substituted imidazolium-based ionic liquids (PILs) as organic catalysts for the SN2 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.
中文翻译:
yr标记的离子液体:S N 2氟化的可分离有机催化剂
我们制备了pyr取代的咪唑基离子液体(PIL),作为使用碱金属氟化物(MF)进行S N 2氟化的有机催化剂。在该系统中,由于咪唑部分的相转移催化作用以及金属阳离子-π(py)相互作用,PIL显着提高了MF的反应性。此外,这种均相催化剂PIL易于通过还原石墨烯氧化物与PIL的π-π堆积而从反应混合物中分离出来。
更新日期:2017-06-20
中文翻译:
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yr标记的离子液体:S N 2氟化的可分离有机催化剂
我们制备了pyr取代的咪唑基离子液体(PIL),作为使用碱金属氟化物(MF)进行S N 2氟化的有机催化剂。在该系统中,由于咪唑部分的相转移催化作用以及金属阳离子-π(py)相互作用,PIL显着提高了MF的反应性。此外,这种均相催化剂PIL易于通过还原石墨烯氧化物与PIL的π-π堆积而从反应混合物中分离出来。