Results 191 to 200 of about 6,035 (254)
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Biochimica et Biophysica Acta (BBA) - Biomembranes, 1981
Hydroxylated benzene derivatives inhibited transport of d-glucose into calf-thymocyte plasma-membrane vesicles. The relative effectiveness of these was pyrogallol >hydroquinone ≅ catechol ⪢ phloroglucinol. The most thoroughly studied of these agents, hydroquinone, produced weak, immediate inhibition when first added to membranes (Ki > 10 mM).
W P, Schraw, D M, Regen, T M, Harris
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Hydroxylated benzene derivatives inhibited transport of d-glucose into calf-thymocyte plasma-membrane vesicles. The relative effectiveness of these was pyrogallol >hydroquinone ≅ catechol ⪢ phloroglucinol. The most thoroughly studied of these agents, hydroquinone, produced weak, immediate inhibition when first added to membranes (Ki > 10 mM).
W P, Schraw, D M, Regen, T M, Harris
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Thermochemistry of benzoquinones
The Journal of Chemical Thermodynamics, 2004A thermochemical study of the p-benzoquinone and the duroquinone has been performed by different calorimetric techniques. Applying heat flux calorimetry and differential scanning calorimetry, the enthalpies of fusion for each substance were measured. Enthalpies of combustion in condensed phase were determined by static bomb combustion calorimetry hence
Aarón Rojas-Aguilar +3 more
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Spin-Carrying Benzoquinone Derivatives
The Journal of Organic Chemistry, 2009Several 1,4-benzoquinone derivatives carrying oxy-TEMPO radical(s) at the 2-position or 2,5-positions were found to give black crystals by recrystallization from pale yellow solutions and it was revealed from their crystal structures that unusual single-component CT complexes were formed, in which a nitroxide moiety plays the roll of a donor part and a
Shin'ichi, Nakatsuji +4 more
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2001
[106-51-4] C6H4O2 (MW 108.10) InChI = 1S/C6H4O2/c7-5-1-2-6(8)4-3-5/h1-4H InChIKey = AZQWKYJCGOJGHM-UHFFFAOYSA-N (useful as an oxidizing1 or dehydrogenation agent;2 can function as a dienophile3 in the Diels–Alder reaction or as a dipolarophile to prepare 5-hydroxyindole derivatives4) Alternate Name: p-benzoquinone.
Teng-Kuei Yang, Chi-Yung Shen
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[106-51-4] C6H4O2 (MW 108.10) InChI = 1S/C6H4O2/c7-5-1-2-6(8)4-3-5/h1-4H InChIKey = AZQWKYJCGOJGHM-UHFFFAOYSA-N (useful as an oxidizing1 or dehydrogenation agent;2 can function as a dienophile3 in the Diels–Alder reaction or as a dipolarophile to prepare 5-hydroxyindole derivatives4) Alternate Name: p-benzoquinone.
Teng-Kuei Yang, Chi-Yung Shen
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A fluorinated masked o-benzoquinone
Journal of Fluorine Chemistry, 2004AbstractFor Abstract see ChemInform Abstract in Full Text.
Timothy B. Patrick +3 more
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Benzoquinone imines. Part II. Hydrolysis of p-benzoquinone monoimine and p-benzoquinone di-imine
Journal of the Chemical Society B: Physical Organic, 1969Kinetic 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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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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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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Methylation of substituted 1,4-benzoquinones
Collection of Czechoslovak Chemical Communications, 1987Methylation of 1,4-benzoquinones I and Ia with diazomethane afforded methyl 15-(6-methoxy-3-methyl-1,4-benzoquinon-2-yl)pentadecanoate (IIa) and methyl 15-(3-methoxy-2,5-dioxobicyclo[4.1.0]hept-3-en-1-yl)pentadecanoate (IIIa), methylation of 1,4-benzoquinone IVa led to methyl 15-(5,6-dimethoxy-3-methyl-1,4-benzoquinon-2-yl)pentadecanoate (Va) and ...
Jaroslav Kopecký +2 more
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Deslongchamps Annulations with Benzoquinone Monoketals
Organic Letters, 2011The so-called Deslongchamps annulation of deprotonated γ,δ-unsaturated β-ketoesters 15 to 2-(alkoxycarbonyl)cyclohex-2-en-1-ones or similarly activated cyclohex-2-en-1-ones offers a versatile access to various kinds of decalindiones. The scope of Deslongchamps annulations was extended by establishing acceptor-substituted benzoquinone monoketals such as
Petrović, Denis, Brückner, Reinhard
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