Visible light induced oxidative C–C and C–N coupling provides a milder alternative to the current synthetic strategies. However, the photochemical C–C coupling of benzylamine and chromoselective C–C/C–N conversion are not widely reported. Herein, we demonstrate that the introduction of indium vacancies in ZnIn₂S₄ improves the catalytic activity for C–C coupling of benzylamine and imparts a strong chromoselectivity for C–C or C–N coupled products. A high C–C selectivity of ∼80% is achieved with a benzylamine conversion of ∼80%. Mechanistic studies unveil the switchable reaction routes between kinetically favored C–C coupling and thermodynamically favored C–N coupling under specific illumination conditions.

中文翻译：

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通过缺陷工程 ZnIn2S4 形成波长选择性 C-C 和 C-N 键


可见光诱导的氧化 C-C 和 C-N 偶联为当前的合成策略提供了一种更温和的替代方案。然而，苄胺的光化学C-C偶联和选择性C-C/C-N转化尚未得到广泛报道。在此，我们证明在 ZnIn ₂ S ₄ 中引入铟空位提高了苄胺 C-C 偶联的催化活性，并赋予 C-C 或 C- 很强的颜色选择性。 N 耦合产品。苯甲胺转化率约为 80%，C-C 选择性高达 80%。机理研究揭示了特定光照条件下动力学上有利的 C-C 耦合和热力学上有利的 C-N 耦合之间的可切换反应路线。