Results 121 to 130 of about 3,701 (179)

Isoxazoles

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Isoxazoles I: Protonation of Isoxazole Derivatives in Aqueous Sulfuric Acid

Journal of Pharmaceutical Sciences, 1973
The 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.
R H, Manzo, M M, De Bertorello
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Synthesis of Isoxazole- and Oxazole-4-carboxylic Acids Derivatives by Controlled Isoxazole-Azirine-Isoxazole/Oxazole Isomerization

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, Ekaterina E. Galenko, Mikhail S. Novikov, Alexander F. Khlebnikov   +3 more
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An Intercalating Isoxazole

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.
M. D. Mosher, N. R. Natale, A. Vij
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Studies in isoxazole chemistry. IV. Isoxazoles via isoxazolines

Canadian Journal of Chemistry, 1970
4- or 5-Chloro- or cyanoisoxazoles, 5-chloromethylisoxazoles, and 5-methylisoxazoles were made by the 1,3-dipolar cycloaddition of nitrile oxides to α-halogeno- or α-alkoxyolefins. In the case of cis- and trans-1,2-dichloroethylene, (5a and b) the intermediate cis- and trans-4,5-dichloroisoxalines (6a and b) were isolated.
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Transition Metal‐Mediated Functionalization of Isoxazoles: A Review

Asian Journal of Organic Chemistry, 2021
Suchithra Madhavan, Manmohan Kapur, Santosh Kumar Keshri   +2 more
exaly  

Ru(III)-catalyzed construction of variously substituted quinolines from 2-aminoaromatic aldehydes (ketones) and isoxazoles: Isoxazoles as cyclization reagent and cyano sources

Chinese Chemical Letters, 2022
Xiuling Cui, Yangjie Wu, Chao Pi
exaly  

Isoxazoles

1996
Murugan Sutharchanadevi, Ramiah Murugan
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Recent Developments in the Synthesis and Reactivity of Isoxazoles: Metal Catalysis and Beyond

Advanced Synthesis and Catalysis, 2015
Michal Szostak, Feng Hu
exaly  

Phosphorylated isoxazoles

Chemistry of Heterocyclic Compounds, 1990
N. V. Aristova, B. I. Gorin, S. V. Kovalenko, V. A. Pavlov, V. V. Moskva   +4 more
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