Combining Photoredox‐Catalyzed Trifluoromethylation and Oxidation with DMSO: Facile Synthesis of α‐Trifluoromethylated Ketones from Aromatic Alkenes
作者:Ren Tomita、Yusuke Yasu、Takashi Koike、Munetaka Akita
DOI:10.1002/anie.201403590
日期:2014.7.7
organic compounds with a trifluoromethyl group. A new and facile synthesis of ketones with a trifluoromethyl substituent in the α‐position proceeds through a one‐pot photoredox‐catalyzed trifluoromethylation–oxidation sequence of aromatic alkenes. Dimethyl sulfoxide (DMSO) serves as a key and mild oxidant under these photocatalytic conditions. Furthermore, an iridium photocatalyst, fac[Ir(ppy)3] (ppy=2‐phenylpyridine)
三氟甲基化的酮是具有三氟甲基的有机化合物的有用的结构单元。通过一锅光氧化还原催化的芳香族烯烃的三氟甲基化-氧化顺序,可以进行新的且简便的α位三氟甲基取代基酮的合成。在这些光催化条件下,二甲基亚砜(DMSO)用作关键和温和的氧化剂。此外,事实证明,铱光催化剂fac [Ir(ppy)3 ](ppy = 2-苯基吡啶)对于当前的光氧化还原工艺至关重要。