نتایج جستجو برای: oxadiazol denvativesl differential pulsevoltammary

تعداد نتایج: 285294  

Journal: :Molecules 2012
Jian-Quan Weng Xing-Hai Liu Hua Huang Cheng-Xia Tan Jie Chen

A series of new 3-[(5-aryl-1,3,4-oxadiazol-2-yl)methy])benzo[d]thiazol-2(3H)-ones were synthesized by reaction of (5-substituted-2-oxobenzothiazolin-3-yl)-acetohydrazide with various aromatic acids in POCl(3) under reflux conditions. The structures of the title compounds were confirmed by ¹H-NMR, ¹³C-NMR, IR, MS and elemental analysis. Furthermore, the structure of compound 4i was determined by...

Journal: :Molecules 2014
Raied M Shakir Azhar Ariffin Mahmood Ameen Abdulla

Eleven new 2,6-di-tert-butyl-4-(5-aryl-1,3,4-oxadiazol-2-yl)phenols 5a-k were synthesized by reacting aryl hydrazides with 3,5-di-tert butyl 4-hydroxybenzoic acid in the presence of phosphorus oxychloride. The resulting compounds were characterized based on their IR, ¹H-NMR, ¹³C-NMR, and HRMS data. 2,2-Diphenyl-1-picrylhydrazide (DPPH) and ferric reducing antioxidant power (FRAP) assays were us...

2008
Gui-Ge Hou Li-Li Liu Jian-Ping Ma Ru-Qi Huang Yu-Bin Dong

The title compound, C(12)H(8)N(4)O(2)·C(8)H(6)O(4), was synthesized from 4-[5-(4-pyrid-yl)-1,3,4-oxadiazol-2-yl]pyridine N-oxide and isophthalic acid. The two mol-ecules are linked through O-H⋯O and O-H⋯N hydrogen bonds. Weak intra-molecular π-π inter-actions between the two hydrogen-bonded chains result in the formation a one-dimensional supra-molecular curved tape (the face-to-face distance b...

2010
Hoong-Kun Fun Jia Hao Goh Nithinchandra B. Kalluraya

IN THE TITLE SYDNONE COMPOUND [SYSTEMATIC NAME: 3-(4-meth-oxy-phen-yl)-1,2,3-oxadiazol-3-ium-5-olate], C(9)H(8)N(2)O(3), the essentially planar oxadiazole ring [maximum deviation = 0.005 (1) Å] is inclined at a dihedral angle of 30.32 (8)° with respect to the benzene ring. In the crystal, adjacent mol-ecules are inter-connected by inter-molecular C-H⋯O hydrogen bonds into sheets lying parallel ...

2011
Trupti S. Chitre Santosh Panda Shital M. Patil Aparna S. Chothe G. Vignesh Amol B. Salake Muthu K. Kathiravan

In the present study, a novel series of Mannich bases of 3-substituted 5-(pyridin-4-yl)-1,3, 4-oxadiazol-2-thione derivatives were synthesized. Docking study was performed to rationalize the possible interactions between the synthesized compounds and active site of 14DM. The test compounds were screened for antimycobacterial activity using Middlebrook 7H9 medium against M. tuberculosis H37Rv (A...

2008
N C Desai A M Bhavsar M D Shah Anil K Saxena

Several new 2-(2-(4-chlorophenyl)acetyl)-N-arylhydrazinecarbothioamides 1, 5-(4-chlorobenzyl)-4-aryl-4H-1,2,4triazole-3-thiols 2, 5-(4-chlorobenzyl)-N-aryl-1,3,4-thiadiazol-2-amines 3 and 5-(4-chlorobenzyl)-N-aryl-1,3,4-oxadiazol-2amines 4 have been synthesized and screened for their antibacterial activity against gram +ve and gram –ve bacteria i.e S.aureus and E. coli. The QSAR studies of thes...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 2009
Wael A El-Sayed Farag A El-Essawy Omar M Ali Barsis S Nasr Mohamed M Abdalla Adel A-H Abdel-Rahman

A number of new 5-[(naphthalen-5-yloxy)methyl]-1,3,4-oxadiazole derivatives, 2-5 and 8-11, were synthesized. The 2-{5-[(naphthalen-5-yloxy)methyl]-1,3,4-oxadiazol-2-ylthio}acetohydrazones 6a and 6b were synthesized by the reaction of the hydrazide 4 with the corresponding monosaccharides. Cyclization of the sugar hydrazones 6a and 6b with acetic anhydride afforded the substituted oxadiazoline d...

Journal: :Organic letters 2007
Man-kit Leung Chih-Chiang Yang Jiun-Haw Lee Hsin-Hung Tsai Chi-Feng Lin Chih-Yen Huang Yuhlong Oliver Su Chi-Feng Chiu

The fluorescence and phosphorescence of 2,2'-bis(5-phenyl-1,3,4-oxadiazol-2-yl)biphenyl shows good spectral matching with the absorption spectra of the MLCT1 and MLCT3 transitions of Ir(ppy)3. The red-shift of the 0-0 band in the phosphorescence at 77 K is due to the intramolecular pi-pi interactions between the oxadiazole side chains. Maximum brightness of 43,000 cd/m2 with an efficiency of 26...

2012
Xiang-Wen Wu Xiao-Yan Wang Jian-Ping Ma Yu-Bin Dong

In the crystal of the title compound, [Cu(2)Cl(4)(C(50)H(32)N(9)O(8)P(3))(2)], the binuclear mol-ecule is located across an inversion center. Each Cu(2+) cation is coordinated by two pyridine N atoms from symmetry-related 4,4;6,6-bis-(biphenyl-2,2'-diyldi-oxy)-2,2-bis-{2-[5-(pyridin-4-yl)-1,3,4-oxadiazol-2-yl]phen-oxy}cyclo-triphosphazene (L) ligands, a pair of bridging Cl(-) anions and a termi...

Journal: :Acta Crystallographica Section E Structure Reports Online 2008

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