Copper or Silver-Mediated Oxidative C(sp<sup>2</sup>)–H/N–H Cross-Coupling of Phthalimide and Heterocyclic Arenes: Access to <i>N</i>-Arylphthalimides
作者:Tatyana V. Gryaznova、Kirill V. Kholin、Elizaveta O. Nikanshina、Vera V. Khrizanforova、Sofia O. Strekalova、Robert R. Fayzullin、Yulia H. Budnikova
DOI:10.1021/acs.organomet.9b00443
日期:2019.10.14
Copper or silver-catalyzed direct C(sp2)–H/N–H electrochemical cross-coupling of phthalimide and heterocyclic arenes (2-phenylpyridine, benzo[h]quinoline, benzoxazole, and benzothiazole, etc.) for the efficient synthesis of phthalimide derivatives is described. This reaction features good yield, mild conditions, and broad substrate scope, which provides an efficient and straightforward protocol to
铜或银催化的直接C(SP 2)-H / N-H电化学交叉耦合邻苯二甲酰亚胺和杂环芳烃的(2-苯基吡啶,苯并[ ħ描述了用于有效合成邻苯二甲酰亚胺衍生物的[喹啉,苯并恶唑和苯并噻唑等]。该反应具有良好的收率,温和的条件和广泛的底物范围,从而提供了一种有效而直接的方案来获得这类叔胺。所提出的方案第一次不仅基于铜催化剂而且基于银,而以前从未用于此目的,并且两者均给出了可比的结果。机械研究(伏安法,ESR研究)表明,在此过程中,通过Cu(I)/ Cu(II)/ Cu(III)或Ag(I)/ Ag(III)循环完成的自由基途径可能被排除在外。