Combined Nearly Ideal Binary Solvent/Redlich-Kister (CNIBS/R-K) equations reported by Li and coworkers [J. Mol. Liq. 234 (2017) 469–480] for calculating the solubility of 1,3,5-trioxane in four binary aqueous-organic solvent mixtures do not describe the solute's observed solubility in the ...

A grand canonical Monte Carlo (GCMC) simulation has been conducted to investigate the adsorption of cyclohexane, oxane, 1,4-dioxane, and 1,3,5-trioxane into a carbon slit pores with widths of 0.8, 1.0, and 1.2 nm at 298 K. Particular emphasis has been paid to the effect of molecular size and sha...

A rapid expansion of production capacities for 1,3,5-trioxane has occurred worldwide, which requires optimizing design and operation and developing new catalysts with high activity and selectivity. Such optimizing and developing need models of phase equilibrium of reaction mixture and of reactio...

The solubilities of 1,3,5-trioxane were measured by a dynamic method in binary solvents (methanol-water, ethanol-water, isopropanol-water and dimethoxymethane-water) at the temperature range (288.15 to 328.15) K at atmosphere pressure. The solubility increased with increasing of temperature in a...

Cycloaddition reactions of substituted α,β-unsaturated esters with various electronich olefins lead to 6-alkoxy-3,4-dihydro-2H-pyrans.

Porcine pancreas lipase(PPL)-catalyzed acetylation of (±)-2-hydroxymethyl-3,4-dihydro-2H-pyran with vinyl acetate in organic solvent afforded (S)-(+)-2-acetoxymethyl-3,4-dihydro-2H-pyran. Alternatively, (±)-2-acetoxymethyl-3,4-dihydro-2H-pyran was resolved via hydrolysis catalyzed by PPL in ac...

The synthesis and aqueous swelling properties of a new family of crystalline-rubbery hydrogels based on poly (ethylene glycols) (PEG) and 3,4-dihydro-2H-pyranyl-2-methyl-(3,4-dihydro-2H-pyran-2-carboxylate) are described. Their use as monolithic delivery systems for prostaglandin E2 (PGE2) is pr...

The control of the reactivity of novolac resins towards common crosslinkers through the use of 3,4-dihydro-2H-pyran as a protecting group is reported. This thermally labile protecting group is shown to be effective for the control of the cure of the novolac resin system through the use of models...

An unprecedented facile oxidation of 1,3,5-trisubstituted pyrazolines and Hantzsch 1,4-dihydropyridines (DHPs) to the corresponding pyrazoles and pyridines was observed, mediated by 3,4-dihydro-2H-pyran in air. The reaction showed excellent reactivity, functional group tolerance, and high yield ...

An indium-mediated Barbier type mono-allylation of 1,5-dicarbonyl compounds and a subsequent acid-catalyzed dehydrative cyclization afforded 2,3-dihydro-4H-pyran-4-ones and 3,4-dihydro-2H-[1,4]oxazines.

Tandem catalytic reaction in one-pot possesses remarkable advantages and is a powerful methodology for the synthesis of high value chemicals. Asymmetric transfer hydrogenation catalyzed by Ru-TsDPEN type catalysts, developed Noyori and Ikariya, is a useful strategy for constructing chiral alcoho...

2-Sulfonimidoylylidene tetrahydrofurans and 2-sulfonimidoylylidene-5-vinyl tetrahydrofurans were readily synthesized via a consecutive acylation/SN2 sequence with total regio- and chemoselectivity from Johnson's sulfoximine derivatives. The same consecutive reaction could also be applied to...

The reaction of β-fluoroalkylated α,β-unsaturated ketones with various enamines gave 4-fluoroalkylated 3,4-dihydro-2H-pyrans as a major product in good yields by a one-pot operation, and these products display the high diastereoselection just after single recrystallization. This unexpected re...

This study reports the equilibrium conditions for the dissociation of methane hydrate in the presence of cyclic ethers of 2,5-dihydrofuran (C4H6O) and 3,4-dihydro-2H-pyran (C5H8O) as additives. For the water-soluble additive of 2,5-dihydrofuran, the hydrate–liquid water–vapor (H–Lw–V) three-...

Molecular dynamics simulations of a pyridine solute in sub- and supercritical water are performed to investigate the organization and dynamics of water molecules at different parts of the solute solvation shell. The radial/angular and spatial orientational functions provide information on the sp...

Periodic mesoporous organosilicas (PMOs) were synthesized from precursor mixtures of bridged organosilanes containing various ratios of divinylbenzene (vPh) and divinylpyridine (vPy) under basic conditions. The bifunctional vPh-vPy-PMOs exhibited ordered mesoporous structures and molecular scale...

Fallen leaves of Platanus orientalis and Ginkgo biloba linn were separately immersed in water to obtain leachates that were used as exogenous electron donors for accelerating pyridine and quinoline biodegradations. Leachate addition accelerated the pyridine removal rate by up to 4.4% and 3.6% an...

The data presented in this article are related to research articles “Titanium and vanadium catalysts with oxazoline ligands for ethylene-norbornene (co)polymerization (Ochędzan-Siodłak et al., 2018). For the title compounds, 2-(1,3-oxazolin-2-yl)pyridine (Py-ox) and 2,6-bis(1,3-oxazolin-2-yl)py...

Electrochemical reduction of CO2 is promising to utilize the intermittent renewable electricity and transform CO2 into value-added products, simultaneously. Herein, we designed a cobalt phthalocyanine-based catalyst supported on pyridine-functionalized carbon nanotubes (CoPc-py-CNT). This novel ...

Thermochemical and geometrical parameters of all chlorinated compounds of pyridine were calculated with the CBS-QB3 composite method. Standard entropies, standard Gibbs free energies of formation, standard enthalpies of formation, and heat capacities were computed and compared with their corresp...