Novel syntheses of symmetrical 2,5-diaryl-1,3,4-oxadiazoles and 1,4-phenylenebis-1,3,4-oxadiazoles

被引：1
|
作者：
Belen'kii, LI [1 ]
Luiksaar, SI [1 ]
Poddubnyi, IS [1 ]
Krayushkin, MM [1 ]
机构：
[1] Russian Acad Sci, ND Zelinskii Organ Chem Inst, Moscow 117913, Russia
来源：
RUSSIAN CHEMICAL BULLETIN | 1998年 / 47卷 / 11期
关键词：
trichloromethylarenes; 2,5-diaryl-1,3,4-oxadiazoles; 1,4-phenylenebis-1,3,4-oxadiazoles;
D O I：
10.1007/BF02494289
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The reactions of trichloromethylarenes with excess hydrazine hydrate in ethanol gives symmetrical 2,5-diaryl-1,3,4-oxadiazoles in 68-96% yields. The reaction of 1,4-bis(trichloromethyl)benzene with acylhydrazines in an ethanol-pyridine mixture gives the corresponding substituted or unsubstituted 1,4-phenylenebis-1,3,4-oxadiazoles in 35-51% yields. The mass spectra of 2,5-diaryl-1,3,4-oxadiazoles and 1,4-phenylenebis-1,3,4-oxadiazoles were studied.
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页码：2238 / 2245
页数：8
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