Photochemical and electrochemical regioselective cross-dehydrogenative C(sp2)–H sulfenylation and selenylation of substituted benzo[a]phenazin-5-ols?
New Journal of Chemistry Pub Date: 2022-06-14 DOI: 10.1039/D2NJ02224A
Abstract
A dual synthetic strategy based on visible-light (white LEDs/direct sunlight) irradiation and electrosynthesis has been explored for the regioselective cross-dehydrogenative C(sp2)–H sulfenylation and selenylation of substituted benzo[a]phenazin-5-ols in an oxygen atmosphere under mild reaction conditions. The photochemical process does not require any external photoredox catalysts. Photocatalytic application of in situ generated deprotonated species of benzo[a]phenazin-5-ol molecules has also been accomplished. This is the first report on the synthesis of functionalized phenazine derivatives.
![Graphical abstract: Photochemical and electrochemical regioselective cross-dehydrogenative C(sp2)–H sulfenylation and selenylation of substituted benzo[a]phenazin-5-ols](http://scimg.chem960.com/usr/1/D2NJ02224A.jpg)
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Journal Name：New Journal of Chemistry
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CAS no.: 89640-58-4
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