期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 3, 页码 1583-1587出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202010782
关键词
alkynes; C− H activation; heterocycles; photochemistry; rhodium
资金
- National Natural Science Foundation of China [21971234, 21772194, 21572225]
- China Postdoctoral Science Foundation [2019M661137]
- Liaoning Revitalization Talents Program [XLYC1807181]
Transition metal catalyzed decarbonylation offers a unique synthetic strategy for new chemical bond formation. The study developed a visible light induced rhodium catalysis for decarbonylative coupling of imides with alkynes under ambient conditions, revealing the rhodium complex serves as both the catalytic center and photosensitizer. This visible light promoted catalytic decarbonylation strategy opens up new opportunities for re-evaluating old transformations with ligand dissociation as a rate-determining step.
Transition metal catalyzed decarbonylation offers a distinct synthetic strategy for new chemical bond formation. However, the pi-backbonding between CO pi* orbitals and metal center d-orbitals impedes ligand dissociation to regenerate the catalyst under mild reaction conditions. Developed here is visible light induced rhodium catalysis for decarbonylative coupling of imides with alkynes under ambient conditions. Initial mechanistic studies suggest that the rhodium complex simultaneously serves as the catalytic center and photosensitizer for decarbonylation. This visible light promoted catalytic decarbonylation strategy offers new opportunities for reviewing old transformations with ligand dissociation as a rate-determining step.
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