Journal Article10.2174/157017806776611962
Microwave-Assisted Regiospecific Synthesis of 2-Trifluoromethyl-7- Trihalomethylated Pyrazolo[1,5-a]Pyrimidines
Fernanda A. Rosa,Helio G. Bonacorso,Nilo Zanatta,Alex F. C. Flores,Gabriela F. Fiss,Daniel J. Emmerich,Elisandra Scapin,Marcos A. P. Martins,Wilson Cunico +8 more
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About: This article is published in Letters in Organic Chemistry. The article was published on 01 May 2006. The article focuses on the topics: Trifluoromethyl.
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Citations
Efficient sonochemical synthesis of thiazolidinones from piperonilamine.
Patrícia D. Neuenfeldt,Auri R. Duval,Bruna B. Drawanz,Pauline F. Rosales,Claudia R. B. Gomes,Claudio M. P. Pereira,Claudio M. P. Pereira,Wilson Cunico +7 more
TL;DR: An efficient multicomponent reaction of arenealdehydes, mercaptoacetic acid and piperonilamine under ultrasound irradiation to afford 2-aryl-3-(piperonylmethyl)-1,3-thiazolidin-4-ones is reported.
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Resourceful synthesis of pyrazolo[1,5-a]pyrimidines under ultrasound irradiation
Lilian Buriol,Taiana S. Munchen,Clarissa P. Frizzo,Mara R. B. Marzari,Nilo Zanatta,Helio G. Bonacorso,Marcos A. P. Martins +6 more
TL;DR: Pyrazolo[1,5-a]pyrimidines were synthesized via the ultrasonic sonochemical method using the cyclocondensation reaction of 4-alkoxy-1,1, 1-trifluoro-3-alken-2-ones using CF3C(O)CH=C(R)(OMe).
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Ultrasound irradiation promotes the synthesis of new 1,2,4-triazolo[1,5-a]pyrimidine.
Clarissa P. Frizzo,Elisandra Scapin,Mara R. B. Marzari,Taiana S. Munchen,Nilo Zanatta,Helio G. Bonacorso,Lilian Buriol,Marcos A. P. Martins +7 more
TL;DR: Ultrasonic irradiation was used in the synthesis of a series of novel 1,2,4-triazolo[1,5-a]pyrimidines, showing several advantages, such as shorter reaction times, mild conditions, high regioselectivity, and excellent yields when compared with conventional thermal heating (oil bath).
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α-aminoazoles in the Synthesis of heterocycles: V. Synthesis of azolo[1,5-a]pyrimidines from 2-ethoxyvinyl trifluoromethyl ketones and 2,2-diethoxyvinyl trifluoromethyl ketone
E. E. Emelina,A. A. Petrov +1 more
TL;DR: In this paper, a procedure was proposed for the synthesis of 7-trifluoromethylazolo[1,5-a]pyrimidines by reactions of 2-ethoxyvinyl trifluorsyl ketones and 2,2-diethoxyvinyl trifeldioxyl ketone with 5(3)-aminoazoles.
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Molecular structure of pyrazolo[1,5-a]pyrimidines: X-ray diffractometry and theoretical study
TL;DR: The structure of 7-trichloromethyl-2-methylpyrazolo[1,5-a]pyrimidine (1) and 3-bromo 2-methyl-7-(thien-2)-yl)pyrazola[1.5a] pyrimidine was determined by X-ray diffractometry as mentioned in this paper.
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