Pirrolidin 2 Onas
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Adição Nucleofílica de Sais de Potássio de Organotrifluoroboratos à Íons N-Acilimínio / Nucleophilic Addition of Potassium Organotrifluoroborate salts to N-Acyliminium Ions
Neste trabalho, desenvolvemos uma nova metodologia para a obtencao estereosseletiva de pirrolidin-2-onas substituidas na posicao 5 atraves de adicao de sais de potassio de organotrifluoroboratos a cations N-aciliminio ciclicos. As reacoes de - amidoalquilacao envolvem lactamas derivadas do acido tartarico . (3R,4R)-3,4,5-tris- (acetoxi)-1-benzil-2-oxopirroli
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/06/2009
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2. 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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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