Chemistry of acetals

Yanovskaya, L. A.; Yufit, S. S.; Kucherov, V. F.

doi:10.1007/bf01161540

Cited by 7 publications

(7 citation statements)

References 4 publications

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“…The fact that deprotonated methanediol is stabilized in the complex with the polymetallic core is not surprising, because the heminal diols are unstable. 6 It should also be noted that the synthesis of the [Fe 6 (O) 2 (CH 2 O 2 )(OOCCMe 3 ) 12 Py 2 ] complex (4) and its structure have been described re cently. 7 The molecule of the latter compound differs from molecule 3 in that the former contains the monodentate coordinated Py molecules instead of the monodentate coordinated THF molecules present in 3.…”

Section: Resultsmentioning

confidence: 99%

Hexanuclear methanediolate bridged iron(III) complex

2005

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Section: Resultsmentioning

confidence: 99%

Hexanuclear methanediolate bridged iron(III) complex

2005

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“…The main by-product of γ-radiolysis in the methanolformaldehyde system is methylal, СН 2 (ОСН 3 ) 2 , which results from the thermal acetalization of formaldehyde. The second most abundant by-product is methyl formate, СН 3 ОСНО, which also results from the thermal reversible conversion of formaldehyde [3,7]. The concentrations of these products in the solution irradiated to a dose of 7.56 × 10 4 Gy at 473 K are, respectively, 0.56 and 0.08 mol dm -3 , which are 23.3 and 3.3 % of the total initial formaldehyde concentration in the system (2.4 mol dm -3 ).…”

Section: Resultsmentioning

confidence: 99%

Power Quality Improvement in Distributed Generation using DSTATCOM and Photovoltaic Power Controller

Silaev¹

2020

IJIRCST

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The mechanism and kinetics are developed for the initiated nonbranched-chain formation of ethylene glycol in methanol-formaldehyde solutions at formaldehyde concentrations of 0.1-3.1 mol dm-3 and temperatures of 373-473 K. The experimental concentrations of the free unsolvated form of formaldehyde are given at the different temperatures and total concentrations of formaldehyde in methanol. The experimental dependence of the radiation-chemical yields of ethylene glycol on formaldehyde concentration in γ-radiolysis of methanol-formaldehyde solutions at 373-473 K is shown. At a formaldehyde concentration of 1.4 mol dm-3 and T = 473 K, the radiation-chemical yield of ethylene glycol is 139 molecules per 100 eV. The effective activation energy of ethylene glycol formation is 25 ± 3 kJ mol-1. The quasi-steady-state treatment of the reaction network suggested here led to a rate equation accounting for the nonmonotonic dependence of the ethylene glycol formation rate on the concentration of the free (unsolvated) form of dissolved formaldehyde. It is demonstrated that the peak in this dependence is due to the competition between methanol and CH 2 =O for reacting with the adduct radical HOCH 2 CH 2 O • .

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“…Characteristic features of this process have been thoroughly studied and discussed in a review 129 and a monograph. 130 The main shortcomings of this method are its tedious procedures and moderate yields. Similar results were obtained by employing ethoxyacetylene 117 instead of the active methylene component.…”

Section: Condensation Of Ch Acids With Carbonyl Compoundsmentioning

confidence: 99%

Synthetic methodologies for carbo-substituted conjugated dienes

Васильев¹,

Serebryakov²

2001

Russ. Chem. Rev.

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We report the observation of changes in the wave turbulence properties of gravitycapillary surface waves due to a finite-depth effect. When the fluid depth is decreased, a hump is observed on the wave spectrum in the capillary regime at a scale that depends on the depth. The possible origin of this hump is discussed. In the gravity regime, the wave spectrum still shows a power law but with an exponent that strongly depends on the depth. A change in the scaling of the gravity spectrum with the mean injected power is also reported. Finally, the probability density function of the wave amplitude rescaled by its rms value is found to be independent of the fluid depth and to be well described by a Tayfun distribution.

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Chemistry of acetals

Cited by 7 publications

References 4 publications

Hexanuclear methanediolate bridged iron(III) complex

Hexanuclear methanediolate bridged iron(III) complex

Power Quality Improvement in Distributed Generation using DSTATCOM and Photovoltaic Power Controller

Synthetic methodologies for carbo-substituted conjugated dienes

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