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Metal‐Free‐Mediated Oxidation Aromatization of 1,4‐Dihydropyridines to Pyridines Using Visible Light and Air
Author(s) -
Wei Xiaojing,
Wang Lin,
Jia Wenliang,
Du Shaofu,
Wu Lizhu,
Liu Qiang
Publication year - 2014
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201400521
Subject(s) - chemistry , aromatization , visible spectrum , pyridine , eosin y , catalysis , photocatalysis , photochemistry , environmentally friendly , salt (chemistry) , metal , inorganic chemistry , organic chemistry , ecology , physics , optoelectronics , biology
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 K 2 CO 3 , the aerobic catalytic system converts 1,4‐dihydropyridines to their corresponding pyridine derivatives efficiently under visible light irradiation ( λ =450 nm) at room temperature.