Radical alkylation of imines with 4-alkyl-1,4-dihydropyridines cocatalyzed by iridium/ruthenium complex and Brønsted acid under visible light irradiation has been achieved. Both aldimines and ketimines can undergo this transformation. Common functional groups, such as hydroxyl groups, ester, amide, ether, cyanide, and heterocycles, can be tolerated in this reaction. A variety of structurally diverse amines (57 examples) have been produced with up to 98% isolated yields using this method.

中文翻译：

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由光氧化还原/布朗斯台德酸共催化实现的亚胺与4-烷基-1,4-二氢吡啶的自由基烷基化

在可见光照射下，铱/钌配合物和布朗斯台德酸共同催化了亚胺与4-烷基-1,4-二氢吡啶的自由基烷基化反应。醛亚胺和酮亚胺都可以经历这种转化。在该反应中可以耐受常见的官能团，例如羟基，酯，酰胺，醚，氰化物和杂环。使用这种方法已生产出多种结构多样的胺（57个实例），分离产率高达98％。