Metal-Free-Mediated Oxidation Aromatization of 1,4-Dihydropyridines to Pyridines Using Visible Light and Air

Metal-Free-Mediated Oxidation Aromatization of 1,4-Dihydropyridines to Pyridines Using Visible Light and Air

A metal‐free and environmentally friendly aerobic aromatization photosensitized by organic dye eosin Y bis(tetrabutyl ammonium salt) (TBA‐eosinY) has been developed. With the aid of K2CO3, the aerobic catalytic system converts 1,4‐dihydropyridines to their corresponding pyridine derivatives efficien...

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Veröffentlicht in:Chinese journal of chemistry 2014-12, Vol.32 (12), p.1245-1250
Hauptverfasser: Wei, Xiaojing, Wang, Lin, Jia, Wenliang, Du, Shaofu, Wu, Lizhu, Liu, Qiang
Format: Artikel
Sprache:eng
Schlagworte:
aromatization
eosin Y
molecular oxygen
Oxidation
photooxidation
visible light irradiation
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Zusammenfassung:A metal‐free and environmentally friendly aerobic aromatization photosensitized by organic dye eosin Y bis(tetrabutyl ammonium salt) (TBA‐eosinY) has been developed. With the aid of K2CO3, the aerobic catalytic system converts 1,4‐dihydropyridines to their corresponding pyridine derivatives efficiently under visible light irradiation (λ=450 nm) at room temperature. A metal‐free and environmentally friendly aerobic aromatization photosensitized by organic dye eosin Y bis(tetrabutyl ammonium salt) (TBA‐eosinY) has been developed. With the aid of K2CO3, the aerobic catalytic system converts 1,4‐dihydropyridines to their corresponding pyridine derivatives efficiently under visible light irradiation (λ=450 nm) at room temperature.
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.201400521