An operationally simple protocol for the photocatalytic carbamoylation of imines is reported. Easily available, bench-stable 4-amido Hantzsch ester derivatives serve as precursors to carbamoyl radicals that undergo rapid addition to N-aryl imines. The reaction proceeds under blue light irradiation in the presence of the photocatalyst 3DPAFIPN and Brønsted/Lewis acid additives. Mechanistic studies indicated
报道了一种操作简单的
亚胺光催化
氨基甲酰化方案。易于获得、实验室稳定的 4-酰胺基 Hantzsch 酯衍
生物可作为
氨基甲酰基自由基的前体,快速加成至N-芳基
亚胺上。该反应在蓝光照射下、光催化剂 3DPAFI
PN 和布朗斯特/
路易斯酸添加剂的存在下进行。机理研究表明光氧化还原机制涉及
氨基甲酰基自由基。