我们设计和合成了双三甘醇的Crown-5calix [4] arene(BTC5A)作为使用KF进行亲核氟化的多功能促进剂。BTC5A的杯冠部分和乙二醇的协同作用使KF易于溶解在有机溶剂中,甚至在非极性非质子介质中活化了氟化物。为了验证其实用性,在BTC5A存在下,使用KF(或[ 18 F] F –)成功地进行了S N 2氟化,包括各种底物的18 F氟化。
Pyrene-Tagged Ionic Liquids: Separable Organic Catalysts for S<sub>N</sub>2 Fluorination
作者:Abu Taher、Kyo Chul Lee、Hye Ji Han、Dong Wook Kim
DOI:10.1021/acs.orglett.7b01064
日期:2017.7.7
as organic catalysts for the SN2 fluorination using alkalimetalfluoride (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
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。
申请人:FutureChem Co., Ltd. (주)퓨쳐켐(120040453668) Corp. No ▼ 124611-0260311BRN ▼121-81-46715
公开号:KR102063498B1
公开(公告)日:2020-01-08
본 발명은 [18F]플루오린을 포함한 유기플루오로 화합물의 제조에 관한 것으로, 화학식 1로 표시되는 용매를 친핵성 플루오르화 반응에 사용함으로써 고수율로 유기 플루오로화합물을 제조할 수 있을 뿐만 아니라, 상기 용매는 전구체 화합물에 대한 용해도가 매우 우수하여, 18F-표지 방사성 의약품의 자동합성에 적합한 이점이 있다.
Tailor-Made Hexaethylene Glycolic Ionic Liquids as Organic Catalysts for Specific Chemical Reactions
作者:Vinod H. Jadhav、Hwan-Jeong Jeong、Seok Tae Lim、Myung-Hee Sohn、Dong Wook Kim
DOI:10.1021/ol200751e
日期:2011.5.6
Hexaethylene glycol substituted imidazolium based ionicliquids (hexaEGILs) were designed and prepared well-tailored to a specific organic reaction using alkali-metal fluorides (MFs) as multifunctional organic catalysts. These hexaEGIL catalysts could significantly enhance the reactivity of MF, even KF. Furthermore, the hexaEGIL systems showed tremendous efficiency in the nucleophilicfluorination of base-sensitive
Azeotropic drying-free aliphatic radiofluorination to produce PET radiotracers in a mixed organic solvent system
作者:Young-Do Kwon、Jeongmin Son、Mijin Yun、Joong-Hyun Chun
DOI:10.1016/j.tetlet.2018.06.033
日期:2018.7
in various organic solvents for subsequent radiofluorination. Herein, we report the azeotropic drying-free radiofluorination of aliphatic substrates and demonstrate the viability of hydrated [18F]fluoride ions in a mixed organic solventsystem for obtaining useful radiochemical yields (RCYs). This practical and simple method has demonstrated general applicability to the production of established PET