Results 191 to 200 of about 30,818 (251)
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Journal of the American Chemical Society, 2008
Oxidation of graphite may be carried out by reaction with meta-chloroperoxybenzoic acid to yield graphite epoxide. Scanning tunneling microscopy (STM) showed that the functionalization occurs at the edges rather than on the basal plane of the graphite.
Jayanta, Chattopadhyay +8 more
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Oxidation of graphite may be carried out by reaction with meta-chloroperoxybenzoic acid to yield graphite epoxide. Scanning tunneling microscopy (STM) showed that the functionalization occurs at the edges rather than on the basal plane of the graphite.
Jayanta, Chattopadhyay +8 more
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ChemInform, 1991
Publisher Summary The method for asymmetric epoxidation of alicyclic alcohols is known as Sharpless. The success of this method initiated much research into other techniques of asymmetric oxidation of alkenes in general and this chapter considers the progress in the area for the last six years.
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Publisher Summary The method for asymmetric epoxidation of alicyclic alcohols is known as Sharpless. The success of this method initiated much research into other techniques of asymmetric oxidation of alkenes in general and this chapter considers the progress in the area for the last six years.
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Chemistry and Physics of Lipids, 2001
Previously unknown 4,5-epoxy-N-acetyl-sphingosine (1) was synthesized by epoxidation of N-acetyl-sphingosine with 1,1-dimethyldioxirane. A by-product generated by HPLC purification is the tetrahydrofuryl derivative of acetamide (2). Mainly allylic oxidation was observed when natural ceramides were reacted with dimethyldioxirane.
A, Möllenberg, G, Spiteller
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Previously unknown 4,5-epoxy-N-acetyl-sphingosine (1) was synthesized by epoxidation of N-acetyl-sphingosine with 1,1-dimethyldioxirane. A by-product generated by HPLC purification is the tetrahydrofuryl derivative of acetamide (2). Mainly allylic oxidation was observed when natural ceramides were reacted with dimethyldioxirane.
A, Möllenberg, G, Spiteller
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Epoxidations: Titanium‐Catalyzed Epoxidation
ChemInform, 2005AbstractFor Abstract see ChemInform Abstract in Full Text.
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The interaction of cytosolic epoxide hydrolase with chiral epoxides
International Journal of Biochemistry, 19931. The kinetic parameters of the cytosolic epoxide hydrolase were examined with two sets of spectrophotometric substrates. The (2S,3S)- and (2R,3R)-enantiomers of 4-nitrophenyl trans-2,3-epoxy-3-phenylpropyl carbonate had a KM of 33 and 68 microns and a Vmax of 16 and 27 mumol/min/mg, respectively.
E C, Dietze, E, Kuwano, B D, Hammock
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Tetrahedron, 1964
Abstract New preparative routes to the 13α,17aα-epoxide (II) and the 13β,17aβ-epoxide (III) are described. Boron trifluoride in benzene converts the α-epoxide (II) into a mixture from which five products were isolated, but the β-epoxide (III) gives only the 17aβ-hydroxy-Δ8(14)-olefin (VIII).
J.M. Coxon, M.P. Hartshorn, D.N. Kirk
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Abstract New preparative routes to the 13α,17aα-epoxide (II) and the 13β,17aβ-epoxide (III) are described. Boron trifluoride in benzene converts the α-epoxide (II) into a mixture from which five products were isolated, but the β-epoxide (III) gives only the 17aβ-hydroxy-Δ8(14)-olefin (VIII).
J.M. Coxon, M.P. Hartshorn, D.N. Kirk
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Epoxidation of 4-Alkylidenecyclopentenones
Synlett, 2006AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Ahmar, Mohammed +2 more
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Epoxidation of homoisoflavones
Journal of Heterocyclic Chemistry, 2003AbstractA comparative study of the epoxidation of homoisoflavones (3‐benzyl‐4‐chromones) 1–4 has been performed by various oxidizing agents, víz. Epoxidation with isolated dimethyldioxirane (Method A), with alkaline hydrogen peroxide (Method B), and with sodium hypochlorite (Method C) to obtain the epoxides 4–8.
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ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
R. A. Sheldon, M. C. A. Van Vliet
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AbstractFor Abstract see ChemInform Abstract in Full Text.
R. A. Sheldon, M. C. A. Van Vliet
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Nature, 1949
EPOXIDES occur among the products of the autoxidation of unsaturated fatty acids1 and drying oils2, and it has been suggested that they may be formed as intermediates in certain biological oxidations. Their accurate estimation is therefore a matter of considerable importance.
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EPOXIDES occur among the products of the autoxidation of unsaturated fatty acids1 and drying oils2, and it has been suggested that they may be formed as intermediates in certain biological oxidations. Their accurate estimation is therefore a matter of considerable importance.
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