Preparation and synthetic applications of novel tetrafluoroethylenating zinc reagent with a triple bond as its functional group
作者:Chihiro Kajimoto、Takuto Kataoka、Shota Kageyama、Haruka Ohsato、Shigeyuki Yamada、Tsutomu Konno
DOI:10.1016/j.jfluchem.2021.109929
日期:2022.1
smoothly with various acid chlorides at 40 °C in the presence of 1,3-dimethyl-3,4,5,6-tetrahydro-2(1H)-pyrimidinone (DMPU) as a cosolvent and 30 mol% each of copper(I) bromide (CuBr) and 1,10-phenanthroline, affording the corresponding tetrafluoroethylenated ketones in high yield. However, in the cross-coupling reaction with iodoarenes, only reactions with iodoarenes having a directing group at the ortho
(4-bromo-3,3,4,4-tetrafluorobut-1-yn-1-yl) 二甲基苯基硅烷用 2.0 当量处理。将锌银 (Zn-Ag) 合金在 40 °C 的乙腈中加热 7 小时,以良好的收率生成了一种新型的具有三键的四氟乙烯化锌试剂。在 1,3-二甲基-3,4,5,6-四氢-2(1 H )-嘧啶酮 (DMPU) 作为助溶剂和 30 mol%溴化铜 (I) (CuBr) 和 1,10-菲咯啉中的每一种,以高产率提供相应的四氟乙烯化酮。然而,在与碘芳烃的交叉偶联反应中,只有与在邻位具有导向基团的碘芳烃发生反应 在 1,4-二氧六环作为助溶剂和 30 mol% CuBr 存在下,在 60 °C 下,位置反应非常有效,并以高产率获得了相应的产物。