Modification, Characterization, and Catalytic Application of Mesolite for One Pot Synthesis of 3-Methyl-4-arylmethylene-isoxazol-5(4H)-ones

Natural mesolite type zeolite was collected, modified by sulphuric acid treatment and characterized by using Powder-X ray diffraction, Scanning electron microscopy and Energy dispersive spectroscopy, Fourier transform infrared spectroscopy. Temperature programmed ammonia desorption, Brunauer-Emmer-Teller surface area analysis. Modified dealuminated mesolite shows an efficient catalytic activity for one pot synthesis of 3-methyl-4-arylmethylene-isoxazol-5(4H)-ones derivatives, via one pot three component condensation of benzaldehyde, ethylacetoacetate and hydroxylamine hydrochloride. Present method offers several advantages over the reported methods like a simple and inexpensive modification of catalyst, mild reaction condition, easy separation of catalyst, simple work-up procedure, nonchromatographic isolation and purification desired product and excellent yield. Furthermore, catalyst could be reused without significant loose in activity. Copyright © 2017 BCREC GROUP. All rights reservedReceived: 25th August 2016; Revised: 10th October 2016; Accepted: 17th October 2016How to Cite: Pawar, G.T., Gadekar, S.P., Arbad, B.R., Lande, M.K. (2017). Modification, Characterization, and Catalytic Application of Mesolite for One Pot Synthesis of 3-methyl-4-arylmethylene-isoxazol-5(4H)-ones. Bulletin of Chemical Reaction Engineering & Catalysis, 12 (1): 32-40 (doi:10.9767/bcrec.12.1.655.32-40)Permalink/DOI: http://dx.doi.org/10.9767/bcrec.12.1.655.32-40

Study of binary liquid mixture of n-decane and validation of theoretical approaches of sound speed at 298.15 K

236-245Experimental values of densities (ρ) and speeds of sound (u) at T=298.15 K in the binary mixtures of n-decane with hexan-2-ol, heptan-2-ol and octan-2-ol are presented over the whole range of mixture composition. From these data, excess molar volumes (VmE), excess isentropic compressibility (kEs), excess intermolecular free length (LfE), excess specific acoustic impedance (ZE), excess available volume (VaE) and excess internal pressure (πE) have been calculated. These results were fitted to Redlich-Kister polynomial equations to estimate the binary coefficients and standard errors. Comparisons of theoretical ultrasonic speeds have been calculated by using collision factor theory (CFT), free length theory (FLT), Nomoto’s empirical equation (NOM), Jouyban-Acree model and Prigogine-Flory-Patterson (PFP) theory with Van der Waals (vdW) potential energy model and the results have been compared with experimental values. Extensive work is carried out to judge the best suitable model out of CFT, NOM, FLT, PEP theory and Jouyban-Acree model. The deviation from ideality of these parameters is explained on the basis of molecular interactions between components of the mixture

Transition metal complexes with oxygen donor ligands: a synthesis, spectral, thermal and antimicrobial study

Transition metal complexes of chalcones derived from the conden¬sation of 3-acetyl-6-methyl-2H-pyran-2,4(3H)-dione (dehydroacetic acid) and p-methoxybenzaldehyde (HL1) or p-nitrobenzaldehyde (HL2) were synthesized and characterized by elemental analysis, conductometry, thermal analysis, magnetic measurements, IR, 1H-NMR, UV–Vis spectroscopy and a microbial study. From the analytical and thermal data, the stoichiometry of the complexes was found to be 1:2 (metal:ligand). The molar conductance data revealed that all the metal chelates were non-electrolytes. The thermal stability of the complexes was studied by thermogravimetry and the decomposition schemes of the complexes are given. The ligands and their metal complexes were screened for antibacterial activity against Staphylococcus aureus and Escherichia coli, and fungicidal activity against Aspergillus flavus, Curvularia lunata and Penicillium notatum

Excess molar volumes and deviation in viscosities of binary liquid mixtures of acrylic esters with hexane-1-ol at 303.15 and 313.15 K

Densities and viscosities for the four binary liquid mixtures of methyl acrylate, ethyl acrylate, butyl acrylate and methyl methacrylate with hexane-1-ol at temperatures 303.15 and 313.15 K and at atmospheric pressure were measured over the entire composition range. These values were used to calculate excess molar volumes and deviation in viscosities which were fitted to Redlich–Kister polynomial equation. Recently proposed Jouyban Acree model was also used to correlate the experimental values of density and viscosity. The mixture viscosities were correlated by several semi-empirical approaches like Hind, Choudhary–Katti, Grunberg–Nissan, Tamura and Kurata, McAllister three and four body model equations. A graphical representation of excess molar volumes and deviation in isentropic compressibility shows positive nature whereas deviation in viscosity shows negative nature at both temperatures for all four binary liquid mixtures. Positive values of excess molar volumes show that volume expansion is taking place causing rupture of H-bonds in self associated alcohols. The results were discussed in terms of molecular interactions prevailing in the mixtures

Modification, Characterization, and Catalytic Application of Mesolite for One Pot Synthesis of 3-Methyl-4-arylmethylene-isoxazol-5(4H)-ones

Natural mesolite type zeolite was collected, modified by sulphuric acid treatment and characterized by using Powder-X ray diffraction, Scanning electron microscopy and Energy dispersive spectroscopy, Fourier transform infrared spectroscopy. Temperature programmed ammonia desorption, Brunauer-Emmer-Teller surface area analysis. Modified dealuminated mesolite shows an efficient catalytic activity for one pot synthesis of 3-methyl-4-arylmethylene-isoxazol-5(4H)-ones derivatives, via one pot three component condensation of benzaldehyde, ethylacetoacetate and hydroxylamine hydrochloride. Present method offers several advantages over the reported methods like a simple and inexpensive modification of catalyst, mild reaction condition, easy separation of catalyst, simple work-up procedure, nonchromatographic isolation and purification desired product and excellent yield. Furthermore, catalyst could be reused without significant loose in activity. Copyright © 2017 BCREC GROUP. All rights reserved Received: 25th August 2016; Revised: 10th October 2016; Accepted: 17th October 2016 How to Cite: Pawar, G.T., Gadekar, S.P., Arbad, B.R., Lande, M.K. (2017). Modification, Characterization, and Catalytic Application of Mesolite for One Pot Synthesis of 3-methyl-4-arylmethylene-isoxazol-5(4H)-ones. Bulletin of Chemical Reaction Engineering & Catalysis, 12 (1): 32-40 (doi:10.9767/bcrec.12.1.655.32-40) Permalink/DOI: http://dx.doi.org/10.9767/bcrec.12.1.655.32-4

Extraction and separation studies of gold(III) with 4-(4-methoxybenzylideneimino)-5-methyl-4H-1,2,4-triazole-3-thiol in hydrochloric acid medium

A novel method is proposed for the extraction of microgram level concentration of gold(III) from hydrochloric acid medium with 4-(4-methoxybenzylideneimino)-5-methyl-4H-1,2,4-triazole-3-thiol (MBIMTT) dissolved in chloroform as an extractant. The gold(III) from the organic phase is stripped with ammonia buffer solution (pH-10.1) and determined spectrophotometrically with stannous chloride. The method affords the binary separation and determination of gold(III) from the alloys and synthetic mixtures. The method is applicable for the determination and separation of gold from Ayurvedic samples. The method is highly selective, simple and reproducible

Synthesis and characterization of FeTiO3 ceramics

Nanocrystalline FeTiO3 ceramic powders were prepared by the sol–gel process combined with a surfactant-assisted template method. The resulting powders were calcined at different temperatures ranging from 150 °C to 600 °C for 2 h in air. The results revealed that a pure hexagonal phase of FeTiO3 could be obtained at a low temperature, 600 °C. The phase evolution of FeTiO3 was investigated by X-ray diffraction patterns (XRD), Fourier-transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). Particle size and morphology were studied by transmission electron microscopy (TEM)