array(2) { ["lab"]=> string(4) "1409" ["publication"]=> string(5) "12668" } Synthesis of Polycyclic Heteroaromatic Coumarins via Photoinduced Dehydrogenative Annulation of 4-Phenyl-3-heteroarylcoumarins - Liang Yong | LabXing

Liang Yong

简介 中藥質量控制資訊系統，生物資訊學

大学 Macau University of Science and Technology / Faculty of Information Technology
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Synthesis of Polycyclic Heteroaromatic Coumarins via Photoinduced Dehydrogenative Annulation of 4-Phenyl-3-heteroarylcoumarins

2018
期刊 The Journal of organic chemistry
An efficient, oxidant and metal-free synthesis of polycyclic heteroaromatic coumarins was developed. H-Furo[2′,3′:3,4]naphtho[2,1-c]chromen-4-one (2a–2f), 1H-benzofuro[2′,3′:3,4]naphtho[2,1-c]chromen-1-one (2g–2j), and 4H-thieno[2′,3′:3,4]naphtho[2,1-c]chromen-4-one (2k–2s) derivatives were obtained by the irradiation of 4-phenyl-3-heteroarylcoumarin in EtOH–H2O (9:1, v/v) using a high-pressure Hg lamp as the light source, at room temperature and under an Ar atmosphere. Owing to the expansion of the π-conjugation system, 2a–2s showed strong fluorescence emissions in ethanol solution (ΦF = 0.40–0.83).

  • 卷 83
  • 期 22
  • 页码 13940-13948
  • American Chemical Society
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