Xi‐Cun Wang, Juan Liu, Zheng Li
Mar 1, 2006
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Journal
Phosphorus, Sulfur, and Silicon and the Related Elements
Abstract
A series of substituted 1,3,4-oxadiazoles were synthesized by the cyclization of 2,6-pyridine dicarboxylic acid, 5-(4 ′-carboxyl-phenyl)-2-furanylcarboxylic acid, or p-phthalic acid, and aryl hydrazines in the presence of phosphorus oxychloride under the condition of microwave irradiation.