Application of Organolithium and Related Reagents in Synthesis; Part 26. Synthetic Strategies Based on Directed ortho-Metalation: Synthesis of 4-Methyl-2H-phthalazin-1-ones
作者:Jan Epsztajn、Zbigniew Malinowski、Jacek Z. Brzezińki、Monika Karzatka
DOI:10.1055/s-2001-18056
日期:——
Synthesis 2001, No. 14, 26 1
综合 2001, No. 14, 26 1
Copper-catalyzed aerobic benzylic C(sp<sup>3</sup>)–H lactonization of 2-alkylbenzamides <i>via</i> N-centered radicals
Herein, we describe the copper-catalyzed aerobic C(sp3)–H functionalization of 2-alkylbenzamides for the synthesis of benzolactones. This reaction proceeds via 1,5-hydrogenatomtransfer of N-centered radicals directly generated by N–H bond cleavage and does not require the synthesis of pre-functionalized N-centered radical precursors or the use of strong stoichiometric oxidants.
在此,我们描述了铜催化的需氧 C(sp 3 )-H 官能化 2-烷基苯甲酰胺用于合成苯并内酯。该反应通过N-H 键断裂直接产生的 N 中心自由基的 1,5-氢原子转移进行,不需要合成预功能化的 N 中心自由基前体或使用强化学计量氧化剂。