A copper-catalyzedaerobic 3-hydroxyisoindolinone synthesis was developed via the benzylic double C(sp3)–H functionalization of 2-alkylbenzamides. In this reaction, molecular oxygen was used as both an oxidant for C(sp3)–H functionalization and an oxygen source. Our method can be extended to diverse benzylic C(sp3)–H bonds and shows excellent functional group tolerance.
Visible-light-induced intramolecular sp<sup>3</sup> C–H oxidation of 2-alkyl-substituted benzamides for the synthesis of functionalized iminoisobenzofurans
作者:Lingang Wu、Yanan Hao、Yuxiu Liu、Qingmin Wang
DOI:10.1039/c9cc07791j
日期:——
developed a protocol for the synthesis of functionalized iminoisobenzofurans by means of visible-light-induced intramolecularcyclizationreactions of 2-alkyl-substituted benzamides. This one step-economical protocol, which involvesintramolecular sp3 C–O bond formation, features mild reaction conditions, exclusive chemoselectivity, and high yields.
A new N-iodosuccinimide-mediated intramolecularoxidation to construct C−O bonds has been developed. The reaction differs in the construction of the C−N bond from the classic and modified Hofmann-Löffler-Freytag reactions.
已经开发出一种新的N-碘代琥珀酰亚胺介导的分子内氧化来构建 CO 键。该反应与经典和改进的 Hofmann-Löffler-Freytag 反应的 C-N 键结构不同。
Visible-light-induced photocatalyst-free intramolecular sp3 C–H oxidation of 2‑alkyl benzamides
作者:Lingang Wu、Lei Sun、Jichun Cui、Lei Xie、Yanlan Wang、Shaozhen Nie
DOI:10.1016/j.tetlet.2022.154093
日期:2022.9
A new amidyl radical-mediated intramolecular 2‑alkyl benzamide oxidation reaction was developed under mild photochemical conditions. This Hofmann–Löffler–Freytag (HLF) type reaction involved the formation of intramolecular sp3 CO bonds via a different pathway than the construction of CN bonds in classic and modified HLF reactions. The oxidation proceeded smoothly at room temperature without any photocatalyst
Derivatives of 3′-isopropylbenzanilide represented by the following general formula:
wherein R stands for a trifluoromethyl or nitro group. These compounds are of remarkable utility when used in various plant protection agents for control of fungi.
由以下通式表示的 3′-异丙基苯甲酰苯胺的衍生物:
其中 R 代表三氟甲基或硝基。这些化合物在各种植物保护剂中用于控制真菌时具有显著的功效。