An environmentally benign, simple, and efficient process has been developed for biodiesel production from waste olive oil in the presence of a catalytic amount TiO2 nanoparticles at 120°C with conversion 91.2% within 4 h. The present method affords nontoxic noncorrosive medium, high yield biodiesel, clean reaction, simple experimental isolation procedures. catalyst can be recycled by filtration reused without any significant reduction its activity.

This paper presents a novel and efficient protocol for the synthesis of pyrrolidinones using catalytic loading 1,1'-butylenebis(3-sulfo-3H-imidazol-1-ium) hydrogen sulfate as recyclable Brönsted acid ionic liquid through ball milling process at room temperature under solvent-free conditions. The developed method provides good to excellent yields various in environmentally friendly Furthermore, this displays combination synthetic advantage one-pot multicomponent reaction with ecological...

This paper presents a green protocol for the synthesis of pyrano[4,3-b]pyrans using catalytic amount 4,4′-trimethylenedipiperidine (TMDP) as novel, efficient and recyclable organocatalyst through ball milling process at room temperature. The essential part this is Knoevenagel condensation to best our knowledge, first report that exhibits efficiency 4,4′-TMDP one-pot multicomponent reaction under melt-state conditions. scope present was explored demonstrated in an environment-friendly...

1,1′-(1,4-Butanediyl)bis(imidazole) was prepared by a modified method and its application as an efficient promoter demonstrated for the mechanosynthesis of N-methyl imines using ball milling non-conventional process under solvent-free conditions. In this new protocol design, bis-imidazole acted recyclable acid-scavenging agent. This approach to displays combination synthetic virtues condensation reaction with ecological benefits convenience facile mechanosynthetic process. The current has...

4-Imidazol-1-yl-butane-1-sulfonic acid (ImBu-SO3H) has been synthesized and completely characterized by FT-IR, one-dimensional NMR spectroscopy (1H, 13C). The "plausible" alternative structures of ImBu-SO3H were discussed NMR. title liquid showed interesting dual solvent-catalytic property, which was studied experimentally in the synthesis quinoline derivatives via Friedländer annulation provided good yield within short reaction time. successfully recycled water extraction, instead organic...

A new catalytic application of tetraethylammonium L-prolinate for the facile and cleaner synthesis 4,4′-(arylmethylene)bis(3-methyl-1-phenyl-1H-pyrazol-5-ol)s is developed. This amino acid-based ionic liquid could be recycled up to five runs, a negligible reduction activity was detected within experimental error. variety substituted were obtained in good high yields under eco-friendly conditions. Tetraethylammonium easy prepare, as well it shows moderate thermal stability solubility water....

This study was carried out to produce biodiesel from olive oil waste by transesterification reaction. Several important reaction variables (the weight ratio of methanol, the temperature, and time) were evaluated obtain a high quality fuel that meets authentic standards. Solar energy applied for electricity generated photovoltaic panels used power motor mixing solution.

The viscosity of neat ionic liquids is very important for their application in organic synthesis as a solvent because most the are viscous, which would result less efficient mass transfer reactants. In present study, series novel dihydro-[1,2,4]triazolo[1,5-a]pyrimidines were prepared using low viscous and acid-functionalized liquid. Our results showed that new liquid can act green acid catalyst due to functionality. products simply extracted was retrieved several times without reducing its...

The catalytic efficiency of 1,1′-butylenebis(3-sulfo-3H-imidazol-1-ium) chloride as a sulfonic acid-functionalized ionic liquid was demonstrated for the synthesis pyrrolidinone derivatives under mild conditions. electronic effect substituents on aniline investigated. Further, study structure–activity relationship liquids containing groups ethyl-2-(4-chlorophenyl)-4-hydroxy-5-oxo-1-(p-tolyl)-2,5-dihydro-1H-pyrrole-3-carboxylate performed optimal results showed that properties two or imidazole...

Abstract Green and sustainable synthesis is considered as a safer alternative to the conventional synthetic processes owing its environmental friendly nature, atom economy, cost‐effectiveness, easy handling. Herein, catalytic efficiency of poly(4‐vinylpyridine) supported iodine (P4VP/I 2 ) metal‐free organocatalyst system was studied approved for an efficient chemical fixation CO into cyclic carbonates which performed via coupling with epoxides. The high conversion excellent selectivity were...

Abstract TiO 2 nanotubes have been used as practical heterogeneous nano‐catalyst for biodiesel production from waste cooking olive oil using solar energy. Several critical parameters namely the reaction time and temperature volume ratio of methanol to were optimized obtain high‐quality fuel. By an optimum WCOO 8.0:1.0 at 60°C within 4 h, highest conversion 91.2 ± 0.7% was obtained. Solar energy applied heat vessel by parabolic trough reflectors, photovoltaic panels employed power a small...

This work presents a new catalytic application of porous poly-melamine-formaldehyde (mPMF) for the efficient synthesis dihydro-[1,2,4]triazolo[1,5-a]pyrimidines. According to principals green chemistry, reaction was performed by planetary ball milling process at ambient and neat conditions. The heterogeneous catalyst could be reused up five runs with no reducing efficiency. A variety substituted dihydro-[1,2,4]triazolo[1,5-a]pyrimidines were obtained in good excellent yields under...

4-Imidazol-1-yl-butane-1-sulfonic acid (ImBu-SO3H) has been successfully synthetized and fully characterized by FT-IR high-resolution NMR spectroscopy (1H, 13C). The “plausible” alternative structures of ImBu-SO3H were discussed on the basis its data. ionic liquid showed interesting dual solvent-catalyst property, which was studied experimentally for acetylation a variety functionalized alcohols, phenols, thiols, amines α-tocopherol (α-CTP) as most active form vitamin E with acetic anhydride...

A new ionic liquid containing a 1H,4H-piperazine-diium ring and chlorosulfonate as 1,4-dicationic core counter ion, respectively, was designed synthesised. The structure elucidation of this conducted by 1D 2D NMR, FT-IR, Raman, mass spectrum analysis. physical properties were determined reported. Furthermore, the dual solvent–catalyst activity piperazine-1,4-diium dichlorosulfonate investigated for synthesis dihydro[1,2,4]triazolo[1,5-a]pyrimidines through one-pot three-component reaction....