An Improved Synthesis of 1,3- and 1,4-Bis[5-aryl-1,3,4-oxadiazol-2-,y1]benzenes via Oxidation of Bis-aroylhydrazones of Iso- and Terephthalaldehyde with Lead(IV) Acetate
作者:Stavros A. Rekkas、Nestor A. Rodios、Nicholas E. Alexandrou
DOI:10.1055/s-1986-31656
日期:——
The oxidation of bis-aroylhydrazones of iso- and terephthalaldehyde with lead(IV) acetate leading to 1,3- and 1,4-bis[5-aryl-1,3,4-oxadiazol-2-yl]benzenes is described.
Novel molecular structures with controllable electron conducting properties
申请人:Getty Ross
公开号:US20070215866A1
公开(公告)日:2007-09-20
Aromatic and heteroaromatic molecular structures with controllable electron conducting properties are derived from the incorporation of electron active substituents in selective positions. Such compounds can form self-assembled layers on metal or other substrates, and can be used in molecular scaled opto-electronic devices including field-effect transistors, light-emitting diodes and photovoltaic cells.
Synthesis and antibacterial activity of some novel bis-1,2,4-triazolo[3,4-b]-1,3,4-thiadiazoles and bis-4-thiazolidinone derivatives from terephthalic dihydrazide
作者:Vikrant S. Palekar、Amey J. Damle、S.R. Shukla
DOI:10.1016/j.ejmech.2009.07.023
日期:2009.12
A novel series of 1,4-bis(6-(substituted phenyl)-[1,2,4]-triazolo[3,4-b]-1,3,4-thiadiazoles (5a–b) and 4-bis(substituted phenyl)-4-thiazolidinone derivatives (7a–c) have been synthesized from terephthalic dihydrazide (1) through multistep reaction sequence. 1,4-Bis(5-aryl-1,3,4-oxadiazole-2yl) benzene derivatives (2a–f) and bis-substituted terephthalohydrazide (6a–e) were also synthesized from terephthalic
Novel syntheses of symmetrical 2,5-diaryl-1,3,4-oxadiazoles and 1,4-phenylenebis-1,3,4-oxadiazoles
作者:L. I. Belen'kii、S. I. Luiksaar、I. S. Poddubnyi、M. M. Krayushkin
DOI:10.1007/bf02494289
日期:1998.11
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