Light-mediated transformations with CO₂ have recently attracted great attention, with the focus on CO₂ incorporation into C-C double and triple bonds, organohalides and amines. Herein is demonstrated visible light -mediated umpolung imine reactivity capable of engaging CO₂ to afford α-amino acid derivatives. By employing benzophenone ketimine derivatives, CO₂ fixation by hydrocarboxylation of C=N double bonds is achieved. Good to excellent yields of a broad range of α,α-disubstituted α-amino acid derivatives are obtained under mild conditions (rt, atmospheric pressure of CO₂, visible light). A procedure that avoids tedious chromatographic purification and uses sustainable sunlight is developed to highlight the simplicity of this method.

中文翻译：

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可见光促进的亚胺固定的CO2合成二芳基α-氨基酸。

光介导的CO ₂转化最近引起了极大的关注，重点是将CO ₂掺入CC双键和三键，有机卤化物和胺中。在此证明了可见光介导的可与酚_2结合的氨酚亚胺反应性，可得到α-氨基酸衍生物。通过使用二苯甲酮酮亚胺衍生物，通过C ＝ N双键的加氢羧化来实现CO ₂固定。在温和的条件下（室温，CO _2的大气压下），可获得范围广泛的α，α-二取代的α-氨基酸衍生物的良好至优异的产率， 可见光）。开发了一种避免繁琐的色谱纯化并使用可持续的阳光的程序，以突出此方法的简便性。