Photoredox catalyzed C(sp3) C(sp) coupling of dihydropyridines and alkynylbenziodoxolones
作者:Shengzong Liang、Ricardo A. Angnes、Chinmay S. Potnis、Gerald B. Hammond
DOI:10.1016/j.tetlet.2019.151230
日期:2019.11
mediated deformylative alkynylation of aldehydes is presented. Under photo irradiation, 1,4-dihydropyridine (DHP), derived from an aldehyde, generated a C(sp3)- radical which couples with an alkynylbenziodoxolone to generate an alkyl substituted alkyne coupling product. This strategy is mild and easy to operate, a wide range of functional groups were tolerated, and 16 examples of products with 35-86% yields
提出了可见光介导的醛的甲酰化炔基化反应。在光照射下,衍生自醛的1,4-二氢吡啶(DHP)生成一个C(sp3)-自由基,该自由基与炔基苯并恶唑烷酮偶合,生成烷基取代的炔烃偶合产物。该策略温和且易于操作,可以容忍各种官能团,并获得了16种产品实例,收率35-86%。