Results 251 to 260 of about 10,662 (299)

Benzoquinone imines. Part II. Hydrolysis of p-benzoquinone monoimine and p-benzoquinone di-imine

Journal of the Chemical Society B: Physical Organic, 1969
Kinetic studies of the hydrolysis of p-benzoquinone monoimine, over the pH range 2–10, have shown that the reaction exhibits first-order kinetics over the whole pH range. The pH dependence indicates a rate-controlling step involving the reaction of both the free imine and its protonated form with water, the latter being 1·8 × 103 more reactive than the
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High-pressure infrared spectra of 1,4-benzoquinone and tetrafluoro-1,4-benzoquinone

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 1996
Abstract The pressure dependence of the infrared spectra (600–1800, 2500–3600 cm −1 ) has been measured for 1,4-benzoquinone(2,5-cyclohexadiene-1,4-dione) and fluoranil (2,3,5,6-tetrafluoro-2,5-cyclohexadiene-1,4-dione). No phase changes occur in either compound over the pressure range from ambient pressure to 50 kbar in benzoquinone and to 40 kbar ...
Jianfang Wang, D.F.R. Gilson
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Electron affinities of p-benzoquinone, p-benzoquinone imine and p-benzoquinone diimine, and spin densities of their p-benzosemiq

Journal of Computer-Aided Molecular Design, 1997
Restricted and unrestricted (U) Hartree–Fock (HF), second-order Moller–Plesset perturbation (MP2), density functional (DF), hybrid HF/DF and semiempirical (half-electron (HE) method) models have been used to calculate adiabatic electron affinities (EAad values) of p- benzoquinone (I), p-benzoquinone imine (VI) and p-benzoquinone diimine (XI), as well ...
Yitbarek H. Mariam, Lek Chantranupong
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1,4-benzoquinone, 2-methyl-1,4-benzoquinone ve tetramethyl-1,4-benzoquinone moleküllerinin moleküler elektronik spektroskopi yöntemi ile incelenmesi

2020
ÖZET Yüksek Lisans Tezi l,4-BENZOQUİNONE, 2-METHYL-l,4-BENZOQUİNONE VE TETRAMETHYL-l,4-BENZOQUİNONE MOLEKÜLLERİNİN MOLEKÜLER ELEKTRONİK SPEKTROSKOPİ YÖNTEMİ İLE İNCELENMESİ Mevlüt KARABIYIK Selçuk Üniversitesi Fen Bilimleri Enstitüsü Fizik Anabilim Dalı Danışman : Yard.Doç.Dr. Erhan AKIN 2002, 66 Sayfa Jüri: Prof.Dr. Hüseyin YÜKSEL Doç.Dr. H.ŞükürKn,IÇ
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Benzoquinone Ansamycins

2005
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p-Benzoquinone

2021
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Quantifying the efficiency of o-benzoquinones reaction with amino acids and related nucleophiles by cyclic voltammetry

Food Chemistry, 2020
Yuting Li, Lin Li, Bing Li
exaly  

Study of reactions of Nε-(carboxymethyl) lysine with o-benzoquinones by cyclic voltammetry

Food Chemistry, 2020
Yuting Li, Yujia Liu, Lin Li
exaly  

Benzoquinone-based antioxidants

2011
The invention relates to a new type of highly polar, at least double-negatively charged redox-active benzoquinones, notably derived from Coenzyme Q0, Q1 and dimethoxy benzoquinones, its production and use. The production of these benzoquinones comprises the reaction of dimethoxy benzoquinones with highly alkaline aqueous solutions. The benzoquinones of
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1,2-Benzoquinones in Diels–Alder reactions, dipolar cycloadditions, nucleophilic additions, multicomponent reactions and more

Chemical Society Reviews, 2012
Vijay Nair, Rajeev S Menon, Akkattu T Biju   +2 more
exaly