Chinese Journal of Chemistry
Copyright © 2014 SIOC, CAS, Shanghai & WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Cover Picture: Metal-Free-Mediated Oxidation Aromatization of 1,4-Dihydropyridines to Pyridines Using Visible Light and Air (Chin. J. Chem. 12/2014)
The cover picture shows an impression of industrial preparation of aromatized Nimodipine by sunlight and air on the arid lands. Visible light is most strongly emitted in the solar spectrum on the surface of the earth. Now Qiang Liu and co-workers develop a metal-free and visible-light driven aerobic aromatization catalyzed by organic dye eosin Y bis(tetrabutyl ammonium salt) (TBA-eosinY). With the aid of K2CO3, the aerobic catalytic system converts 1,4-dihydropyridines such as Nimodipine to their corresponding pyridine derivatives efficiently under visible light irradiation at room temperature. More details are discussed in the article by Liu et al. on page 1245–1250.