Amide-directed photoredox-catalysed C-C bond formation at unactivated sp(3) C-H bonds.

Amide-directed photoredox-catalysed C-C bond formation at unactivated sp(3) C-H bonds.
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在未激活的SP(3)C-H键处,酰胺导向的光电毒素催化的C-C键形成。

DOI:
10.1038/nature19810
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发表时间:
2016-11-10
期刊:
影响因子:
64.8
通讯作者:
Rovis T
Rovis T
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Chu JC;Rovis T

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碳-碳(C-C)键的形成在生物相关分子、现代合成材料和日用化学品(如燃料和润滑剂)的合成中至关重要。传统上,在C-C键形成的位点需要官能团的存在。允许在惰性碳-氢(C-H)键处形成C-C键的策略使科学家能够获得否则无法获得的分子,并开发更有效的复杂分子合成。本文报道了一种通过直接裂解传统的非反应性C-H键并随后与容易获得的烯烃偶联来形成C-C键的方法。我们的方法允许选择性的C-C键的形成在单一的C-H键的分子中,含有大量的看似不可区分的这样的键。选择性通过N-H键的中继光氧化还原催化氧化而产生。我们期望我们的研究结果作为一个起点,通过氢原子转移策略在惰性C-H键官能化。
Carbon-carbon (C-C) bond formation is paramount in the synthesis of biologically relevant molecules, modern synthetic materials and commodity chemicals such as fuels and lubricants. Traditionally, the presence of a functional group is required at the site of C-C bond formation. Strategies that allow C-C bond formation at inert carbon-hydrogen (C-H) bonds allow scientists to access molecules which would otherwise be inaccessible and to develop more efficient syntheses of complex molecules. Herein we report a method for the formation of C-C bonds by directed cleavage of traditionally non-reactive C-H bonds and their subsequent coupling with readily available alkenes. Our methodology allows for the selective C-C bond formation at single C-H bonds in molecules that contain a multitude of seemingly indifferentiable such bonds. Selectivity arises through a relayed photoredox catalyzed oxidation of an N-H bond. We anticipate our findings to serve as a starting point for functionalization at inert C-H bonds through a hydrogen atom transfer strategy.
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