Tetrahedron Letters

Photoconversion of o-hydroxycinnamates to coumarins and its application to fluorescence imaging

SY Cho, YK Song, JG Kim, SY Oh, CM Chung

文献索引：Cho, Sung-Youl; Song, Young-Kyu; Kim, Joong-Gon; Oh, Se-Young; Chung, Chan-Moon Tetrahedron Letters, 2009 , vol. 50, # 33 p. 4769 - 4772

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被引用次数: 13

摘要

(E)-o-Hydroxycinnamates were synthesized and their photochemical behavior was investigated in liquid and solid states. It was confirmed by 1H NMR spectroscopy that the (E)- o-hydroxycinnamates converted into the corresponding coumarins via (Z)-o- hydroxycinnamate intermediates. The photoconversion was greatly accelerated in the presence of p-toluenesulfonic acid. The optical properties of the cinnamates were ...