Results 91 to 100 of about 5,639 (212)
Distributed isoxazoles -- synthesis & photochemistry
, 2001 4-methyl-5-phenyl (F=0.43+/-0.02) and 5-methyl-4-phenyl- isoxazoles (F=0.45+/-0.01) were observed to undergo phototransposition to 4-methyl-5-phenyl and 5-methyl-4- phenyloxazoles and photocleavage to yield a-benzoyl- propionitrile and a ...
Tsefrikas, Vikki Marie
core +3 more sources
Sugar Isoxazole Conjugate Synthesis via Glucose С(З) Modification
Modification of С(З) position in glucose leads to discovery of new previously unknown isoxazole sugar conjugates. As а starting material we hаvе used inexpensive diacetone-D-glucose and have transformed it to the isoxazoles containing ...
Lugiņina, Jevgeņija +3 more
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Versatile and Efficient Solid-Phase Syntheses of Pyrazoles and Isoxazoles
, 2016 Condensation of aromatic or aliphatic esters with resin-supported acetyl carboxylic acids 2, followed by cyclization with hydrazines or hydroxylamine, activation of the linker, and cleavage using amines provides highly substituted, isomeric pyrazoles or ...
Min Shu (261988) +2 more
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Regioselective Synthesis of Polysubstituted Pyrazoles and Isoxazoles
, 2016 A regioselective synthesis has been developed for the preparation of unsymmetrical 1,3,5-triaryl-4-alkylpyrazolines and -pyrazoles by treatment of α-benzotriazolyl-α,β-unsaturated ketones with monosubstituted hydrazines followed by alkylation at the 4 ...
Peter J. Steel (1724674) +4 more
core +1 more source
, 1997 5-Alkoxy-isoxazoles and N,N-disubstituted-5-isoxazolamines were found to isomerize to azirine derivatives by the use of iron dichloride as catalyst.
A. Bini +3 more
core +1 more source
, 2012 International audienceAn efficient approach has been described for the synthesis of 3,5-disubstituted isoxazoles from propargylic alcohols. The strategy involves a one-pot p-TSA-catalyzed N-propargylation of protected hydroxylamines followed by a TBAF ...
Jithender, Enukonda +4 more
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On the reactivity of isoxazoles with Mo(CO)6
, 2004 Ring opening with molybdenum hexacarbonyl of functionalized isoxazoles is a valuable synthetic process. Tetrazolopyridine 4 and pyrazolopyridine 9 were obtained from isoxazolopyridines 3 and 6, respectively, whereas the isoxazole 14 gave ketone 16 ...
Fusi, S. +7 more
core +1 more source
, 1996 The synthesis of furo[3,4-d]isoxazoles (3) and inter- and intramolecular cycloaddition reactions (to 4, 5a,b) are reported. The structures of 3k, 5b and 6 have been clarified by X-ray crystallography.
Friedrichsen, W +5 more
core +1 more source
, 2015 Starting from β-oxodithioesters and hydroxylamine, two completely different transformations afford either β-ketonitriles or isoxazoles with high chemoselectivity depending on the reaction conditions.
Jiaheng Li (1490077) +5 more
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Isoxazoles as Versatile Binding Elements in Carbohydrate Conjugate Chemistry
Modification of C(3) position in glucose leads to discovery of new previously unknown isoxazole-containing sugar ...
Lugiņina, Jevgeņija
core