Parvatkar PT,
Kandambeth S,
Shaikh AC,
Nadinov I,
Yin J,
Kale VS,
Healing G,
Emwas A.-H,
Shekhah O,
Alshareef HN,
Mohammed OF,
Eddaoudi M.
*
King Abdullah University of Science and Technology (KAUST), Thuwal, Kingdom of Saudi Arabia
A Tailored COF for Visible-Light Photosynthesis of 2,3-Dihydrobenzofurans.
J. Am. Chem. Soc. 2023;
145: 5074-5082
Key words
covalent organic frameworks - photocatalysis - [3+2] cycloaddition - 2,3-dihydrobenzofurans
Significance
A covalent organic framework containing hexaazatriphenylene and phenazine units (Hex-Aza-COF) catalyzed the oxidative [3+2] cycloaddition of phenols and styrenes in the presence of (NH4)2S2O8 under white LEDs irradiation to afford the corresponding 2-aryl-2,3-dihydrobenzofurans in up to 95% yield (eq. 1).
Comment
In the oxidative [3+2] cycloaddition of 4-methoxyphenol and trans-p-methoxypropenylbenzene, Hexa-Aza-COF was recovered by centrifugation and reused four times without significant loss of its catalytic activity. The authors have previously reported the preparation of Hex-Aza-COF and its application as an electrode (Adv. Energy Mater.
2020, 10, 2001673; ACS Energy Lett.
2020, 5, 2256).
