Results 241 to 250 of about 19,238 (306)
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Organic Letters, 2020
An efficient protocol for the synthesis of nicotinate derivatives and tetrasubstituted pyridines through a copper-mediated cleavage of isoxazoles has been developed.
Pravin Kumar, M. Kapur
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An efficient protocol for the synthesis of nicotinate derivatives and tetrasubstituted pyridines through a copper-mediated cleavage of isoxazoles has been developed.
Pravin Kumar, M. Kapur
semanticscholar +1 more source
Canadian Journal of Chemistry, 1974
X-Ray, n.m.r., and dielectric studies show that the hydrate of isoxazole is a typical type II clathrate hydrate in structure, in reorientation rates of host and guest molecules, and in composition.
Gough, S.R. +3 more
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X-Ray, n.m.r., and dielectric studies show that the hydrate of isoxazole is a typical type II clathrate hydrate in structure, in reorientation rates of host and guest molecules, and in composition.
Gough, S.R. +3 more
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Isoxazoles with antipicornavirus activity
Journal of Medicinal Chemistry, 1985The synthesis and evaluation of a series of 3,5-disubstituted isoxazoles as antipicornavirus agents have led to the discovery of several compounds effective in vitro against rhinovirus type 2 and poliovirus type 2. Compound 32 was found more effective than 4',6-dichloroflavan against both viruses and was evaluated orally in mice infected ...
Guy D. Diana +5 more
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Acta Crystallographica Section C Crystal Structure Communications, 1996
The title compound, ethyl 3-(9-anthryl)-5-methyl-4-isoxazolecarboxylate, C 21 H 17 NO 3 , possesses two planar ring systems that lie at 80° from coplanarity. The bond linking the two ring systems is 1.489 (3) A, indicating only partial conjugation between the two ring systems.
Ashwani Vij +2 more
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The title compound, ethyl 3-(9-anthryl)-5-methyl-4-isoxazolecarboxylate, C 21 H 17 NO 3 , possesses two planar ring systems that lie at 80° from coplanarity. The bond linking the two ring systems is 1.489 (3) A, indicating only partial conjugation between the two ring systems.
Ashwani Vij +2 more
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ChemInform Abstract: Transformation of 1,2,3,7a‐Tetrahydroimidazo[1,2‐b]isoxazole Derivatives into Isoxazoles. [PDF]
ChemInform, 2007 AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Galina V. Romanenko +4 more
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2008
Isoxazoles, benzisoxazoles, isoxazolines, and isoxazolidines are classes of heterocyclic compounds having a remarkable number of applications and are very versatile building blocks in organic synthesis. The major developments on the chemistry of these heterocycles reported in the literature from 1996 to 2006 are reviewed.
Cordero, Franca M. +2 more
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Isoxazoles, benzisoxazoles, isoxazolines, and isoxazolidines are classes of heterocyclic compounds having a remarkable number of applications and are very versatile building blocks in organic synthesis. The major developments on the chemistry of these heterocycles reported in the literature from 1996 to 2006 are reviewed.
Cordero, Franca M. +2 more
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Inorganica Chimica Acta, 1975
Abstract A number of divalent 3d metal chloride and perchlorate complexes with isoxazole were obtained by interaction of salt and ligand in triethyl orthoformate-ethanol. Characterization of these complexes was based on spectral (ir--electronic), magnetic and conductance evidence.
C.M. Mikulski +4 more
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Abstract A number of divalent 3d metal chloride and perchlorate complexes with isoxazole were obtained by interaction of salt and ligand in triethyl orthoformate-ethanol. Characterization of these complexes was based on spectral (ir--electronic), magnetic and conductance evidence.
C.M. Mikulski +4 more
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Isoxazoles I: Protonation of Isoxazole Derivatives in Aqueous Sulfuric Acid
Journal of Pharmaceutical Sciences, 1973The protonation of 3-amino-5-methylisoxazole, 5-amino-3,4-dimethylisoxazole, sulfamethoxazole (N-sulfanilamido-5-methyl-3-isoxazole), and sulfisoxazole (N-sulfanilamido-3,4-dimethyl-5-isoxazole) in aqueous sulfuric acid was studied. The pKSH+ and log SH+/S or log SH2+2/SH+ values were determined by UV spectrophotometry.
M. Martinez de Bertorello +1 more
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The Journal of Organic Chemistry, 2019
The first synthesis of isoxazole-4-carboxylic acid derivatives by domino isoxazole-isoxazole isomerization is reported. Fe(II)-catalyzed isomerization of 4-acyl-5-methoxy-/5-aminoisoxazoles (dioxane, 105 °C) leads to the formation of isoxazole-4-carboxylic esters and amides in good yields. 4-Formyl-5-methoxyisoxazoles give methyl oxazole-4-carboxylates
Anna V. Serebryannikova +3 more
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The first synthesis of isoxazole-4-carboxylic acid derivatives by domino isoxazole-isoxazole isomerization is reported. Fe(II)-catalyzed isomerization of 4-acyl-5-methoxy-/5-aminoisoxazoles (dioxane, 105 °C) leads to the formation of isoxazole-4-carboxylic esters and amides in good yields. 4-Formyl-5-methoxyisoxazoles give methyl oxazole-4-carboxylates
Anna V. Serebryannikova +3 more
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Synthesis of o-dimethylene isoxazole via isoxazole-fused 3-sulfolene
Tetrahedron Letters, 1992AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Chang, Ruei-Chih, Chou, Ta-Shue
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