is an important catalytic reaction in synthetic chemistry. Herein, we report a simple strategy for the N-alkylation of 2-aminopyridines with 1,2-diketones using BF3·OEt2 as a catalyst. The reaction proceeds under aerobic conditions, leading to the formation of a diverse range of substituted secondary amines in good to excellent yields. A close inspection of the mechanistic pathway using various spectroscopic
胺的N-烷基化是合成化学中重要的催化反应。在此,我们报告了一种使用 BF 3 ·OEt 2作为催化剂对 2-氨基吡啶与 1,2-二酮进行 N-烷基化的简单策略。反应在有氧条件下进行,导致以良好到极好的收率形成各种取代的仲胺。使用各种光谱技术和计算研究对机理途径进行的仔细检查表明,反应通过形成亚胺-酮中间体并释放 CO 2来进行。
Visible-Light-Driven Iron-Catalyzed Intermolecular Benzylic C(sp<sup>3</sup>)–H Amination with 1,2,3,4-Tetrazoles
A visible-light-driven iron-catalyzed C(sp3)–Hamination of diphenylmethane derivatives with 1,2,3,4-tetrazoles under mild conditions has been developed. The reaction proceeds with photosensitizer-free conditions and features satisfactory to good yields. Mechanistic studies revealed that the reaction proceeded via an iron–nitrene intermediate, and H atom abstraction was the rate-determining step. Computational