NOPR Collection: http://nopr.niscpr.res.in/handle/123456789/22016 2026-10-05T11:53:44Z Synthesis and antifungal activities of ω-(5-arylamino-1,3,4-thiadiazol-2-thio)-ω-(1<i>H</i>-1,2,4-triazol-1-yl)acetophenones http://nopr.niscpr.res.in/handle/123456789/22114 Title: Synthesis and antifungal activities of ω-(5-arylamino-1,3,4-thiadiazol-2-thio)-ω-(1<i>H</i>-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-(1<i>H</i>-1,2,4-triazol-1-yl)acetophenones <b>4a-i</b> have been synthesized. The<i> </i>representative compounds exhibit some antifungal and plant<i> </i>growth regulatory activities. The structures of these compounds<i> </i>have been confirmed by elemental analyses, <sup>1</sup>H NMR, IR and MS spectra. Page(s): 2436-2438 2002-11-01T00:00:00Z Do chromium(VI) complexes oxidize <i>via </i>a common mechanism? http://nopr.niscpr.res.in/handle/123456789/22113 Title: Do chromium(VI) complexes oxidize <i>via </i>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<sup>+</sup> 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 2002-11-01T00:00:00Z Crystal structure of <i>N</i>[(2'-hydroxy)benzylidene]-3-chloro-4-fluoroaniline http://nopr.niscpr.res.in/handle/123456789/22112 Title: Crystal structure of <i>N</i>[(2'-hydroxy)benzylidene]-3-chloro-4-fluoroaniline Authors: Gowda, K V Aijuna; Kokila, M K; Puttaraja; Kulkarni, M V; Prakash, N C Shiva Abstract: <span style="font-size:12.0pt;line-height:115%; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:hi"="">The crystal structure of <i>N</i>[(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 <span style="font-size:12.0pt;line-height:115%;font-family:" times="" new="" roman";="" mso-fareast-font-family:hiddenhorzocr;mso-ansi-language:en-in;mso-fareast-language:="" en-in;mso-bidi-language:hi"="">β= <span style="font-size:12.0pt;line-height: 115%;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:hi"="">94.17(7)<sup>o</sup>. 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.</span></span></span> Page(s): 2428-2431 2002-11-01T00:00:00Z Oxidation of urazoles to triazolinediones under solvent-free conditions using permanganate and alumina-supported permanganate http://nopr.niscpr.res.in/handle/123456789/22111 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 2002-11-01T00:00:00Z