期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 20, 期 47, 页码 9330-9336出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ob01587k
关键词
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资金
- MCIN/AEI [PID2021-127423NB-I00, PID2020-113711GB-I00]
- Spanish Government [FPU20/00707]
Recent interest has grown in the fusion product of quinoxalinone skeletons and 1,2,3-triazole units due to their agonistic and inhibitory properties. The mechanism for the photoredox-catalyzed synthesis of these scaffolds has been unveiled through DFT calculations, revealing the rate-determining step and predictive chemistry for reaction conditions.
The interest in the fusion product of quinoxalinone skeletons and 1,2,3-triazole units has greatly increased in recent years since they are known to be agonists of G-protein-coupled Niacin receptor 109A and inhibitors of the benzodiazepine and adenosine receptors. Here, we unveil the mechanism for the photoredox catalyzed synthesis of those scaffolds by means of DFT calculations. The calculations indicate that the rate determining step of this transformation is the attack of the in situ generated radical intermediate on the C=N bond of the quinoxalinone species to form a new C-C bond. Predictive chemistry here reveals that the energy difference is so subtle, and gives the recipe of which substituents, sterically and electronically, can fit to perform the reaction at room temperature.
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