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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
Photocycloadditions in disparate chemical environments
David E Marschner1, Philipp W Kamm, Hendrik Frisch
1Macromolecular Architectures, Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology (KIT), Engesser Str. 20, Geb. 11.21, 76131 Karlsruhe, Germany. christopher.barner-kowollik@kit.edu.
Abstract:
We elucidate the wavelength dependence of a photocycloaddition by (i) accessing action plots dependent on the reactivity relative to the number of absorbed photons, (ii) establishing the effect on substrate concentration on photochemical reactivity and (iii) determining wavelength-dependent reactivity as a function of the solvent environment, comparing acetonitrile with dimethyl sulfoxide.
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