Herein, a mild and effective hydroxymethylation and formylation of quinolines or isoquinolines with methanol in the absence of external acids and transition metals is described using the coupling reaction promoted by PhIFA and visible light. A variety of substituted quinolines or isoquinolines proceed the reaction smoothly, providing the corresponding products in moderate-to-good yields. Control experiments
HAT-Mediated Electrochemical C(sp<sup>2</sup>)–H Acylation of Quinolines with Alcohols
作者:Yujie Liao、Cong Jiang、Congcong Qiang、Ping Liu、Peipei Sun
DOI:10.1021/acs.orglett.3c02668
日期:2023.10.13
Herein, an electrochemical hydrogen atom transfer (HAT) strategy for C(sp2)–H formylation of electron-deficient quinolines and isoquinolines is described. The cheap methanol acts as a formyl source with a catalytic amount of N-hydroxyphthalimide (NHPI) as the hydrogen atom transfer (HAT) catalyst. The advantages of this reaction are transition-metal-catalyst- and chemical-oxidant-free conditions, and