Bromofluorination of unsaturated compounds using DMPU/HF as a fluorinating reagent
作者:Shengzong Liang、Francis J. Barrios、Otome E. Okoromoba、Zofia Hetman、Bo Xu、Gerald B. Hammond
DOI:10.1016/j.jfluchem.2017.07.016
日期:2017.11
as the fluorinatingreagent. The DMPU/HF complex showed to be an efficient fluorinatingreagent to convert alkenes into their corresponding bromofluoro compounds. It showed to have high reactivity and the process afforded bromofluorinated products with good Markovnikov regioselectivity. These fluorinated compounds are useful starting materials and serve as building blocks for many fluorinated biologically
Triethylamine Tris-hydrofluoride [(C<sub>2</sub>H<sub>5</sub>)<sub>3</sub>N·3HF]: A Highly Versatile Source of Fluoride Ion for the Halofluorination of Alkenes
作者:Gérard Alvernhe、André Laurent、Günter Haufe
DOI:10.1055/s-1987-28004
日期:——
The combination N-halosuccinimide/triethylamine tris-hydrofluoride is presented as a convenient reagent for halofluorination of alkenes.
N-卤代苏胺/三乙胺三氟化物的组合被提出作为一种方便的试剂,用于烯烃的卤氟化反应。
The combination of ammonium hydrogen fluoride and aluminium fluoride an efficient solid fluoride source for halofluorination of alkenes
The combination of ammonium hydrogenfluoride and porous aluminiumfluoride (NH4HF2-AlF3) is a useful solidreagent for introducing fluorine to simple alkenes with N-halosuccinimide under sonication to afford the halofluorinated compounds.
fluorinated ligands 4 and 5 are almost identical. The low impact of the F-atom on GluN2B affinity was unexpected, as it influences several chemical and physicochemical properties of the ligands. However, introduction of the F-atom led to reduced selectivity over σ receptors. Whereas 5a and 5b display still a 2–3-fold preference for GluN2B over σ1 receptors, they show almost the same affinity to GluN2B and
Replacement of the Benzylpiperidine Moiety with Fluorinated Phenylalkyl Side Chains for the Development of GluN2B Receptor Ligands
作者:Simone Thum、Dirk Schepmann、Dmitrii V. Kalinin、Simon M. Ametamey、Bernhard Wünsch
DOI:10.1002/cmdc.201800566
日期:2018.12.6
syntheses. Compounds 7 a–d were attached to various scaffolds of potent GluN2Bantagonists (scaffold hopping) instead of the original 4‐benzylpiperidine moiety. Although benzoxazol‐2‐ones and indoles with a benzylpiperidine moiety show high GluN2B affinity, the corresponding fluorophenylalkylamine derivatives did not result in high Glu2B affinity. Moderate GluN2B affinity was observed for a 3‐(fluoroalkyl)‐substituted
4-苄基哌啶基部分是强效的中央结构元件Ñ甲基d含有GluN2B亚基天冬氨酸(NMDA)受体拮抗剂。为了获得适用于正电子发射断层扫描的新型GluN2B配体,苄基哌啶部分被氟化的ω-苯基烷基氨基取代。为此,通过3到7步合成过程制备了三个带有氟原子和ω-苯基部分的伯丙胺和丁胺7a - c和一个丁醛7d。化合物7 a – d被连接到各种有效的GluN2B拮抗剂支架上(支架跳跃),而不是最初的4-苄基哌啶部分。尽管具有苄基哌啶部分的苯并恶唑-2-酮和吲哚显示出较高的GluN2B亲和力,但相应的氟苯基烷基胺衍生物并未产生较高的Glu2B亲和力。对于3-(氟代烷基)取代的四氢-1 H -3苯并ze庚因(K i = 239 n m),观察到中等的GluN2B亲和力。但是,对四氢-5 H苯并[7]年戊烯-7胺12 a – c(K i = 17–30 n m)获得了很高的GluN2B亲和力。对接研究导致相同的约束姿势铅化合物Ro