Photocycloaddition reaction of methyl 2-and 3-chromonecarboxylates with various alkenes
…, K Yoshiwara, F Yagishita, W Yoshida, T Mino…
Index: Sakamoto, Masami; Yoshiwara, Kazuya; Yagishita, Fumitoshi; Yoshida, Wataru; Mino, Takashi; Fujita, Tsutomu Research on Chemical Intermediates, 2013 , vol. 39, # 1 p. 385 - 395
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Abstract
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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