Abstract
The irradiation of methyl 2- and 3-chromonecarboxylate in the presence of various alkenes afforded cyclobutane type adducts, whose structures were established by X-ray structural analysis. Methyl 2-chromonecarboxylate showed higher photochemical reactivity than methyl 3-chromonecarboxylate, in which endo adducts were yielded as major products.
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Acknowledgments
This work was supported by a Grant-in-Aid for Scientific Research (No 21350024, 20655007) from the Ministry of Education, Culture, Sports, Science and Technology (MEXT) of the Japanese Government.
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This article is published as part of a themed issue in honor of Prof. Kazuhiko Mizuno’s research accomplishments on the occasion of his retirement.
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Sakamoto, M., Yoshiwara, K., Yagishita, F. et al. Photocycloaddition reaction of methyl 2- and 3-chromonecarboxylates with various alkenes. Res Chem Intermed 39, 385–395 (2013). https://doi.org/10.1007/s11164-012-0656-0
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DOI: https://doi.org/10.1007/s11164-012-0656-0