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Updated: Jun 17, 2026
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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
Supramolecular photocatalysis by confinement--photodimerization of coumarins within cucurbit[8]urils
Barry C Pemberton1, Nilotpal Barooah, D K Srivatsava
1Department of Chemistry and Molecular Biology, North Dakota State University, Fargo, ND 58105, USA.
Abstract:
Cucurbit[8]uril (as low as 10 mol%) acts as a supramolecular catalytic nanoreaction vessel and facilitates the photodimerization of coumarins in water leading to syn dimers. Saturation kinetics shows a sigmoidal dependence with a turnover number of 3.4 min(-1) and a Hill constant of 1.8 indicating a co-operative mechanism in the catalytic process.
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