Reductive Cross-Coupling of Aldehydes and Imines Mediated by Visible Light Photoredox Catalysis
作者:Rui Wang、Mengyue Ma、Xu Gong、Xinyuan Fan、Patrick J. Walsh
DOI:10.1021/acs.orglett.8b03394
日期:2019.1.4
As a result, chemoselective cross-electrophile couplings between aldehydes and ketimines are achieved via umpolung reactivity of ketimines to furnish amino alcohols (44 examples with good to excellent yields). To illustrate the utility of the amino alcohol products, 1,2-dihydroindol-3-one-based fluorophores are easily synthesized using the coupling products. Finally, a plausible reaction pathway is
在光氧化还原催化条件下,酮亚胺的常规亲电反应性被颠倒以产生亲核物质。结果,醛和酮亚胺之间的化学选择性的交叉亲电子偶联是通过酮亚胺与氨基醇的upolung反应来实现的(44个实例,收率高到极好)。为了说明氨基醇产物的效用,使用偶联产物容易地合成基于1,2-二氢吲哚-3-酮的荧光团。最后,讨论了可能的反应途径。