Results 221 to 230 of about 17,152 (250)
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Chemistry – An Asian Journal, 2020
AbstractA general method for the construction of trifluoromethylated 2‐quinolinones has been established herein by using a trifluoromethylative ring expansion of isatin with trifluorodiazoethane. The strategy provides a platform for the rapid synthesis of a wide range of substituted 3‐hydroxy‐4‐trifluoromethyl‐2‐quinolinones.
Muhammad Fahad Jamali +4 more
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AbstractA general method for the construction of trifluoromethylated 2‐quinolinones has been established herein by using a trifluoromethylative ring expansion of isatin with trifluorodiazoethane. The strategy provides a platform for the rapid synthesis of a wide range of substituted 3‐hydroxy‐4‐trifluoromethyl‐2‐quinolinones.
Muhammad Fahad Jamali +4 more
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Enzyme and Protein, 1977
Influence of Isatin on rat tissue acid phosphatase has been studied. It has an organ-specific effect, the liver enzyme is activated, the brain enzyme is inhibited while those of kidney and intestine are not affected. Isatin activation of the liver enzyme is of mixed type and pH dependent.
K.N. Sareen +3 more
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Influence of Isatin on rat tissue acid phosphatase has been studied. It has an organ-specific effect, the liver enzyme is activated, the brain enzyme is inhibited while those of kidney and intestine are not affected. Isatin activation of the liver enzyme is of mixed type and pH dependent.
K.N. Sareen +3 more
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Russian Journal of Organic Chemistry, 2009
The review compiles published data on the synthesis and biological action of new isatin derivatives containing in their composition additional oxygen, nitrogen, or sulfur heterocycles.
E. G. Mesropyan, A. A. Avetisyan
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The review compiles published data on the synthesis and biological action of new isatin derivatives containing in their composition additional oxygen, nitrogen, or sulfur heterocycles.
E. G. Mesropyan, A. A. Avetisyan
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ISATIN: New Hope Against Convulsion
Central Nervous System Agents in Medicinal Chemistry, 2018Epilepsy is one in every of the foremost important chronic neurological disorders with high incidence worldwide. Several epileptic patients don't seem to be fully treated with currently available marketed medicines likewise so many drugs have shown unfavorable side effect and drug interaction.
Rameshwar S, Cheke +3 more
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Substituierte Isatin‐phenylimine
Archiv der Pharmazie, 1975Abstract5‐Brom‐ und 5‐Nitro‐isatin kondensieren mit substituierten Anilinen zu Isatin‐3‐(phenyl)‐iminen. 5‐Brom‐isatin‐3‐(phenyl und naphthyl)‐imin werden auch durch Bromieren von Isatin‐3‐(phenyl und naphthyl)‐imin erhalten. Bei Einsatz von o‐Phenylendiamin erfolgt Ringschluß zu 5‐Brom‐bzw.
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Mass spectrometric study of isatins III. Isatin and N-methylisatin ketals
Chemistry of Heterocyclic Compounds, 1977In contrast to isatin and N-methylisatin, their ethylene-, propylene-, and 2,3-butyleneketals undergo fragmentation via several pathways. In addition to the principal fragmentation pathway — successive loss by the molecular ion (M+) of a CO group and a dioxolane ring or its fragment, the M+ ions of the ketals are also fragmented with elimination of a ...
G. I. Zhungietu +4 more
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Isomerism of isatin-?-aroylhydrazones
Chemistry of Heterocyclic Compounds, 1971The reaction of isatin O-methyl ether with hydrazides of aromatic acids gives the cis and trans forms of α-aroylhydrazones.
V. S. Dmitrukha, P. S. Pel'kis
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Mass spectrometric study of isatins II. N-propyl(allyl, propargyl)isatins
Chemistry of Heterocyclic Compounds, 1977The mass spectra of N-propyl- (I), N-allyl- (IV), and N-propargylisatin (VII) and their 5-methyl (II, V, VIII) and 7-methyl (III, VI, and IX) derivatives were recorded. It is shown that a portion of the [M-2CO]+ ions in the mass spectra of N-propargylisatins undergo rearrangement to give ions with a quinoline structure.
G. I. Zhungietu +5 more
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Journal of Photochemistry, 1987
Abstract Isatin does not show fluorescence or phosphorescence under any conditions. After excitation it undergoes rapid intersystem crossing to the triplet state (τ = 340 ns in deaerated benzene). This triplet state is capable of hydrogen abstraction, yielding a product analogous to pinacol, isatide.
G. Haucke, B. Seidel, A. Graness
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Abstract Isatin does not show fluorescence or phosphorescence under any conditions. After excitation it undergoes rapid intersystem crossing to the triplet state (τ = 340 ns in deaerated benzene). This triplet state is capable of hydrogen abstraction, yielding a product analogous to pinacol, isatide.
G. Haucke, B. Seidel, A. Graness
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Reaction of ω-Vinyloxyalkylamines with Isatin
Russian Journal of Organic Chemistry, 20033-(ω-Vinyloxyalkylimino)-2,3-dihydroindol-2-ones and 3-(vinyloxyphenylimino)-2,3-dihydroindol-2-ones were synthesized in 34-93% yield by reactions of ω-aminoalkyl and aminophenyl vinyl ethers with isatin.
B. F. Kukharev +3 more
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