期刊
TETRAHEDRON LETTERS
卷 55, 期 13, 页码 2065-2069出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2014.02.022
关键词
Aerobic oxidation; Acylhydrazones; Eosin Y; Oxadiazoles; Photoredox catalysis; Visible light
资金
- CSIR, New Delhi
A novel and practical access to symmetrical and unsymmetrical 2,5-disubstituted 1,3,4-oxadiazoles directly from aldehydes and acylhydrazides using visible light irradiation under an air atmosphere in the presence of eosin Y as an organophotoredox catalyst at rt is reported. This is the first example of oxidative cyclization of acylhydrazones employing air and visible light as inexpensive, readily available, non-toxic, and sustainable reagents. (C) 2014 Elsevier Ltd. All rights reserved.
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