H
Helio G. Bonacorso
Researcher at Universidade Federal de Santa Maria
Publications - 491
Citations - 6839
Helio G. Bonacorso is an academic researcher from Universidade Federal de Santa Maria. The author has contributed to research in topics: Trifluoromethyl & Aryl. The author has an hindex of 36, co-authored 475 publications receiving 6164 citations. Previous affiliations of Helio G. Bonacorso include Oswaldo Cruz Foundation & Spanish National Research Council.
Papers
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Journal ArticleDOI
Efficient Microwave‐Assisted Synthesis of 1‐Aryl‐4‐dimethylamino Methyleno‐pyrrolidine‐2,3,5‐triones.
Pâmela S. Vargas,Fernanda A. Rosa,Lilian Buriol,Mariane Rotta,Dayse N. Moreira,Clarissa P. Frizzo,Helio G. Bonacorso,Nilo Zanatta,Marcos A. P. Martins +8 more
TL;DR: In this article, a microwave-assisted synthesis of a series of 1-aryl-4-dimethylaminomethylene pyrrolidine-2,3,5-triones from the cyclocondensation reaction of ethyl 5,5,5trichloro-3-dimethylpolymorphic methylene 2,4-dioxopentanoate with aniline, 3- or 4-substituted anilines is reported.
Journal ArticleDOI
Microwave Assisted Regiospecific Synthesis of 5‐Trifluoromethyl‐4,5‐dihydropyrazoles and ‐pyrazoles.
Marcos A. P. Martins,Claudio M. P. Pereira,Sidnei Moura,Clarissa P. Frizzo,Paulo Beck,Nilo Zanatta,Helio G. Bonacorso,Alex F. C. Flores +7 more
TL;DR: In this paper, a series of 12 5-trifluoromethyl-4,5-dihydropyrazoles and -pyrazoles were synthesized from cyclocondesation reaction of 4-alkoxy in toluene by environmentally benign microwave induced techniques.
Journal ArticleDOI
Microwave‐Assisted Regiospecific Synthesis of 2‐Trifluoromethyl‐7‐trihalomethylated Pyrazolo[1,5‐a]pyrimidines.
Marcos A. P. Martins,Wilson Cunico,Elisandra Scapin,Daniel J. Emmerich,Gabriela F. Fiss,Fernanda A. Rosa,Helio G. Bonacorso,Nilo Zanatta,Alex F. C. Flores +8 more
Journal ArticleDOI
New, simple, and efficient method for the synthesis of N-substituted 4-trifluoromethyl-5-(alkan-1-ol)-pyridin-2(1H)-imines
TL;DR: In this paper, a method for the synthesis of a series of 1-substituted 4-(trifluoromethyl)-5-(alkan-1-ol)-pyridin-2(1 H )-imines from the reaction of 3-(5,6-dihydro-4 H -pyran-3-yl)-4, 4,4,4-triffluorobut-2-enenitrile with primary amines was described.
Journal ArticleDOI
An Efficient Solvent‐Free Synthesis of NH‐Pyrazoles from β‐Dimethylaminovinylketones and Hydrazine on Grinding.
Kelvis Longhi,Dayse N. Moreira,Mara R. B. Marzari,Vagner M. Floss,Helio G. Bonacorso,Nilo Zanatta,Marcos A. P. Martins +6 more
TL;DR: The preparation of NH-pyrazoles according to A) is superior to the classical conditions in EtOH [cf. as mentioned in this paper, and it is known that the NH pyrazoles are more stable.