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Análise de dados de RMN, deslocamentos químicos e constantes de acoplamento do sistema de hidrogênios ABX em 3,5-diaril-4,5-diidro-1H-pirazóis
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2012-09-10)
This dissertation first describes the collection of literature data among the years 2005 to 2011 for the subsequent data analysis of 1H NMR chemical shifts and coupling constants and 2JHH 3JHH with emphasis on the synthesis ...
Efficient sonochemical synthesis of novel 3,5-diaryl-4,5-dihydro-1H-pyrazole-1-carboximidamides
(ELSEVIER SCIENCE BV, 2010)
An Ultrasound-assisted preparation of a series of novel 3,5-diaryl-4,5-dihydro-1H-pyrazole-1-carboximidamides that proceeds via the efficient reaction of chalcones with aminoguanidine hydrochloride under clean conditions ...
Environmentally friendly sonocatalysis promoted preparation of 1-thiocarbamoyl-3,5-diaryl-4,5-dihydro-1H-pyrazoles
(ELSEVIER SCIENCE BV, 2009)
An efficient and green synthesis of thiocarbamoyl-3,5-diaryl-4,5-dihydro-1 H-pyrazoles via the condensation of chalcones with thiosemicarbazide in ethanol and KOH under ultrasound irradiation is reported. The products were ...
Efficient synthesis under mild reaction conditions of novel 3-aryl-5-(4-chloro-2-morpholinothiazol-5-yl)-4,5-dihydro-1H-pyrazoles and their antifungal activity alone and in combination with commercial antifungal agents.
(Wiley VCH Verlag, 2014-04)
The a,b-unsaturated carbonyl compounds 5a–f were prepared by reaction between 2-chloro-4- morpholinothiazol-5-carbaldehyde 3 and substituted acetophenones 4a–f. Treatment of compounds 5a–f with hydrazine hydrate employing ...
Antioxidant and antimicrobial properties of 2-(4,5-dihydro-1H-pyrazol-1-yl)-pyrimidine and 1-carboxamidino-1H-pyrazole derivatives
(Sociedade Brasileira de Química, 2010)
Five previously synthesized 4-trifluoromethyl-2-(5-aryl-3-styryl-1H-pyrazol-1yl)-pyrimidines and six 5-aryl-3-styryl-1-carboxamidino-1H-pyrazole derivatives were screened for their antioxidant proprieties. The antioxidant ...
Ação antioxidante e neuroprotetora de derivados pirazolínicos inéditos
(Universidade Federal de Santa MariaBRFarmacologiaUFSMPrograma de Pós-Graduação em Farmacologia, 2008-03-28)
Oxidative stress is involved in several neurodegenerative diseases, such as Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis. Oxidative stress
seems to be involved in the pathology of dementia/amnesia. ...
Antioxidant Capacity of 2-(3,5-diaryl-4,5-dihydro-1H-pyrazol-1-yl)-4-phenylthiazoles
(BENTHAM SCIENCE PUBL LTD, 2010)
The antioxidant capacity of 2-(3,5-diaryl-4,5-dihydro-1H-pyrazol-1-yl)-4-phenylthiazoles was evaluated. The values of antioxidant capacities of compounds 2d and 2e were found to be, respectively, 2,700 +/- 150 and 3,135 ...
Ultrasound promoted greener synthesis of 2-(3,5-diaryl-4,5-dihydro-1H-pyrazol-1-yl)-4-phenylthiazoles
(ELSEVIER SCIENCE BV, 2011)
A rapid and cleaner procedure for the synthesis of a series of 2-(3,5-diaryl-45-dihydro-1H-pyrazol-1-yl)-4-phenylthiazoles under ultrasonic irradiation in ethanol is described. (C) 2010 Elsevier B.V. All rights reserved.