A zinc β-diketiminate molecule exhibits a wide excited-state redox window and trifluoromethylates a set of arenes/heteroarenes under visible light photoredox conditions.
Direct Decarboxylation of Trifluoroacetates Enabled by Iron Photocatalysis**
作者:Sara Fernández‐García、Veronika O. Chantzakou、Francisco Juliá‐Hernández
DOI:10.1002/anie.202311984
日期:2024.1.25
Iron photocatalysis enables repurposing inexpensive trifluoroacetates as reagents for the C(sp2)−H trifluoromethylation. Thanks to the complementary inner-sphere electron-transfer pathway, photodecarboxylation occurs under mild conditions and can be applied to complex molecules, including natural products and pharmaceuticals.
Direct C2-selective trifluoromethylation of indole derivatives was achieved with Togni's hypervalent iodine reagent and CuOAc as a catalyst in MeOH under mild conditions, affording the desired C2-trifluoromethylated indoles in good yield (up to 90%). (C) 2010 Elsevier Ltd. All rights reserved.