NOPR Collection:

Synthesis and antifungal activities of ω-(5-arylamino-1,3,4-thiadiazol-2-thio)-ω-(1H-1,2,4-triazol-1-yl)acetophenones

2013-10-17T16:39:04Z

Title: Synthesis and antifungal activities of ω-(5-arylamino-1,3,4-thiadiazol-2-thio)-ω-(1H-1,2,4-triazol-1-yl)acetophenones Authors: Chu, Chang-Hu; Hui, Xin-Ping; Xu, Peng-Fei; Zhang, Zi-Yi; Li, Zhi-Chun; Liao, Ren-An Abstract: Several ω-(5-arylamino-1,3,4-thiadiazol-2-thio)-ω-(1H-1,2,4-triazol-1-yl)acetophenones 4a-i have been synthesized. The representative compounds exhibit some antifungal and plant growth regulatory activities. The structures of these compounds have been confirmed by elemental analyses, ¹H NMR, IR and MS spectra. Page(s): 2436-2438

Do chromium(VI) complexes oxidize via a common mechanism?

2013-10-17T16:38:44Z

Title: Do chromium(VI) complexes oxidize via a common mechanism? Authors: Karunakaran, C; Latha, K; Venkataramanan, R; Velan, S Senthil Abstract: Oxidation of 2-propanol by twelve chromium(VI) reagents exhibit identical kinetic behaviour; first order in chromium(VI) and alcohol, second order in H⁺ and inhibited by Mn(II). The activation free energies do not differ significantly. Also, the energy of activation correlates with the logarithm o f frequency factor and so is the enthalpy of activation with the entropy of activation. Page(s): 2432-2435

Crystal structure of N[(2'-hydroxy)benzylidene]-3-chloro-4-fluoroaniline

2013-10-19T16:38:07Z

Title: Crystal structure of N[(2'-hydroxy)benzylidene]-3-chloro-4-fluoroaniline Authors: Gowda, K V Aijuna; Kokila, M K; Puttaraja; Kulkarni, M V; Prakash, N C Shiva Abstract: The crystal structure of N[(2'-hydroxy)benzylidene]-3-chloro-4-fluoroaniline has been de termined by X-ray methods. The compound crystallizes under monoclinic system with cell parameters a = 3.878(2)Å, b = 10.809(1)Å, c = 26.262(2)Å and β= 94.17(7)^o. The entire molecule is planar. The torsional angle of C1-N-C7-C1' is 178° which indicates an anti periplanar arrangement. In view of the importance of weak interactions like Cl....Cl, H....Cl and F... H stabilizing the crystal structure it is pertinent to note some of such observations during the present study. Page(s): 2428-2431

Oxidation of urazoles to triazolinediones under solvent-free conditions using permanganate and alumina-supported permanganate

2013-10-19T16:38:00Z

Title: Oxidation of urazoles to triazolinediones under solvent-free conditions using permanganate and alumina-supported permanganate Authors: Hajipour, Abdol R; Mallakpour, Shadpour E; Zolfigol, Mohammad A; Adibi, H Abstract: Treatment of urazoles with potassium permanganate leads to a simple and mild oxidation reaction, which produces triazolinediones. The reaction is conducted under solvent-free conditions and triazoline diones can be isolated in good to high yields by a simple work-up procedure. The reaction with alumina-supported permanganate enhances the rate and yield. Page(s): 2425-2427