Journal
TETRAHEDRON LETTERS
Volume 68, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2021.152915
Keywords
Photocatalysis; Hydrogen-atom transfer; Aldehyde; Acylation; Quinoxalin-2(1H)-one
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Funding
- Jinhua Branch of Sichuan Industrial Institute of Antibiotics [1004, 1007]
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A green and sustainable method for visible light-promoted selective C3-H acylation of quinoxalin-2(1H)-ones has been developed, using neutral Eosin Y as the catalyst to generate acyl radicals. This method utilizes readily available aldehydes as radical precursors, providing a more efficient and environmentally friendly synthetic approach.
Visible light promoted eosin Y catalyzed selective C3-H acylation of quinoxalin-2(1H)-ones has been developed in a green and sustainable manner. In contrast to the conventional anionic eosin Y-based photoredox process, neutral eosin Y acts as the actual catalyst, which was responsible for the hydrogen-atom transfer (HAT) process to generate the acyl radical with readily available aldehydes as the radical precursor. (C) 2021 Elsevier Ltd. All rights reserved.
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