Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 10, Issue 21, Pages 11514-11523Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ta01325h
Keywords
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Funding
- Major Incubation Project of Shenyang Normal University [ZD201903]
- Natural Science Foundation of Liaoning Province [2021-MS-240, 2019ZD-0476, 202010012]
- Basic Scienti.c Project of the Universities in Liaoning Province [LJKQZ2021052]
- Engineering Technology Research Centre of Catalysis for Energy and Environment-Major Platform for Science and Technology of the Universities in Liaoning Province
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The merger of transition-metal catalysis and photoredox catalysis has achieved a balance between chemical transformation and the rational use of light energy. A dual-functional cobalt covalent organic framework (CoCOF-SYNU-1) was synthesized for visible-light-driven C-H annulation of amides with alkynes. The reaction showed excellent catalyst recyclability and practicability.
The merger of transition-metal catalysis and photoredox catalysis enables a balance between elegant chemical transformation and the rational use of light energy. Previously, it was always accomplished with the two types of homogeneous catalysts: transition-metal catalysts and photoredox catalysts. Herein, we report a synthesis of a dual-functional cobalt covalent organic framework (CoCOF-SYNU-1) for visible-light-driven C-H annulation of amides with alkynes. An atomic-level cobalt center ensures the occurrence of powerful chelation with amides and subsequent precise C-H activation, while the photoactive covalent organic framework is responsible for absorbing visible light to accelerate the catalytic cycle. In the presence of CoCOF-SYNU-1, visible-light-driven regioselective [4 + 2] C-H annulation proceeded smoothly, delivering a wide range of isoquinolin-1(2H)-one derivatives with high efficiency. Significantly, due to the inherent heterogeneous nature and good stability of CoCOF-SYNU-1, the reaction exhibits excellent catalyst recyclability and practicability.
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