http://nopr.niscpr.res.in/handle/123456789/62427 Fri, 09 Oct 2026 16:24:48 GMT 2026-10-09T16:24:48Z http://nopr.niscpr.res.in/handle/123456789/62459 Title: Kinetics and mechanism of oxidation of cinnamyl alcohol by N-chloro p-toluene sulphonamide (Chloramine-T) in acid perchlorate medium Authors: Meena, Anita Abstract: The kinetics of oxidation of cinnamyl alcohol by N-chloro-p-toluene sulphonamide (Chloramine-T) in an aqueous acid medium has been studied. The reaction is first order with respect to the oxidant but exhibits rate independence of substrate concentration. Rate is retarded by hydrogen ion concentration due to protonation of Chloramine-T. The product toluene-psulphonamide does not affect the rate of reaction. The cinnamyl aldehyde has been observed to be the oxidation product spectrally. Page(s): 803-807 Tue, 01 Aug 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/62459 2023-08-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/62458 Title: Quantum chemical and third order nonlinear optical investigation of (E)-1-(1H-imidazol-1-yl)-3-(1H-indol-2-yl)prop-2-en-1-one Authors: Arjunana, G; Karunathan, R; Muhamed, R Raj; Sathyanarayanamoorthi, V Abstract: In this study, quantum chemical and spectroscopic techniques were used to investigate (E)-1-(1H-imidazol-1-yl) and (3-(1H-indol-2-yl))prop-2-en-1-one. Density functional theory simulations at the B3LYP/6-31++G(d,p) level of theory were performed to analyse the geometrical characteristics, NLO activity, and frontier molecular orbitals of synthesised substances. Frontier molecular orbitals (FMOs) analysis was done to determine the kinetic stability of the synthesised compound. The dipole moment and initial hyperpolarizabilities of the investigated compounds demonstrate their suitability as potential nonlinear optical materials. Moreover, molecular structure, vibrational assignments, 1H and 13C NMR chemical shift values were also taken and analysed for the titled compound. Page(s): 808-815 Tue, 01 Aug 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/62458 2023-08-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/62457 Title: Electrochemically induced efficient, simple, non-catalytic synthesis of β-phosphonomalonates via multicomponent reaction Authors: Singh, Vinay K; Chandra, Phool; Srivastava, Shekhar; Singh, Renu Abstract: Electrochemically induced efficient and economical method has been developed for synthesis of β-phosphono malononitriles via condensation of various aldehyde, malononitrile and phosphite esters at room temperature. The present protocol highlights cost efficient, one pot, easy work-up and environmentally benign process. Page(s): 816-822 Tue, 01 Aug 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/62457 2023-08-01T00:00:00Z http://nopr.niscpr.res.in/handle/123456789/62456 Title: A green protocol for the base, ligand, and phase transfer catalyst free coupling of terminal acetylenes in water Authors: Shit, Prasenjit; Singha, Raju Abstract: A green reaction methodology has been developed for the homocoupling / heterocoupling of terminal alkynes to construct the building block 1,4-diarylbuta-1,3-diyne. The coupling reaction occurrs in an aqueous medium in absence of any additional base, ligand, or phase transfer catalyst. Water extract of banana peel ash (WEB) plays a magical role in performing the palladium catalyzed coupling reactions of non-polar organic molecules in polar aqueous medium. Page(s): 823-826 Tue, 01 Aug 2023 00:00:00 GMT http://nopr.niscpr.res.in/handle/123456789/62456 2023-08-01T00:00:00Z