Pyrrolidin 2 Ones
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. SÍNTESE DE 1H-PIRAZÓIS USANDO IRRADIAÇÃO DE ULTRA-SOM E DE 2-PIRROLONAS DERIVADAS DO ÁCIDO LEVULÍNICO / SYNTHESIS OF 1H-PYRAZOLES BY ULTRASOUND IRRADIATION AND 2-PYRROLONES DERIVATED FROM LEVULINIC ACID
This work describes the synthesis of 4,5-dihydropirazoles through a sonochemical methodology, from the reaction of cyclocondensation of 1,3-diaryl-2-propen-1-ones with aminoguanidine hydrochloride and thiosemicarbazide. These reactions were carried out in ethanol in periods of reduced time concerning to the methods described in the literature. Then, it prese
Publicado em: 2008
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2. Efficient synthesis of new 1-[Alkyl(aryl)]-5-(3,3,3-trihalo-2-oxopropylidene)pyrrolidin-2-ones
Este trabalho mostra a síntese, em bons rendimentos (57-95%), de duas séries de 1-alquil(aril)amino-2-oxo-5-(2-oxo-3,3,3-trialopropiliden)-pirrolidinas 5 e 6, a partir dos intermediários 4-[alquil(aril)amino]-6-oxo-7,7,7-trialo-4-hepteno-atos de metila 3 e 4 obtidos por substituição da metoxila-beta nos precursores 4-metoxi-6-oxo-7,7,7-trialo-4-heptenoa
Journal of the Brazilian Chemical Society. Publicado em: 2008
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3. TRIHALOMETHYLATED 3-ALKOXY-4-HYDROXY PYRROLIDIN-2-ONES, 2-METHYLSULFANYL PYRIMIDINE, ENOYLCARBAMATES AND 3-DIALKOXY PHOSPHORYLOXY: SYNTHESIS AND POTENTIAL INHIBITORY ACTIVITY ON THE ACETYLCHOLINESTERASE ENZYME / 3-ALCOXI-4-HIDROXI PIRROLIDIN-2-ONAS, 2-METILSULFANIL PIRIMIDINA, ENOILCARBAMATOS E 3-DIALCOXI FOSFORILOXI TRIALOMETILADOS: SÍNTESE E POTENCIAL INIBITÓRIO SOBRE A ATIVIDADE DA ENZIMA ACETILCOLINESTERASE
Este trabalho apresenta um estudo de várias classes de compostos orgânicos: enamino compostos, γ-aminoálcoois, oxazinonas, oxazinas, diidrofuranonas, pirrolidin-2-onas, 2-metilsulfanil pirimidina, enoilcarbamatos e 3-dialcoxi fosforiloxi trialometilados sobre a atividade da enzima acetilcolinesterase. Também demonstra o efeito per se de solventes or
Publicado em: 2006
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4. SYNTHESIS OF 1-[ARYL(HETEROARYL)]-5-(3,3,3-TRIFLUORO-2-OXO-PROPYLIDENE)PYRROLIDIN-2-ONES / SÍNTESE DE 1-[ARIL(HETEROARIL)]-5-(3,3,3-TRIFLUOR-2-OXOPROPILIDENO) PIRROLIDIN-2-ONAS
The synthesis of a series of ten 1-[aryl(heteroaryl)]-5-(3,3,3-trifluoro-2-oxopropilideno) pyrrolidin-2-ones by intramolecular cyclocondensation reaction of methyl 7,7,7-trifluoro-4-[aryl(heteroaryl)amino]-6-oxo-4-heptanoates in excellent yields (69-95%) is reported. The methyl heptanoate intermediates were obtained in three sequential steps: (i) acetalizati
Publicado em: 2005