Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Helen A. Goulart"'
Autor:
Helen A. Goulart, Daniela R. Araujo, Filipe Penteado, Raquel G. Jacob, Gelson Perin, Eder J. Lenardão
Publikováno v:
Molecules, Vol 26, Iss 24, p 7523 (2021)
Oxone is a commercially available oxidant, composed of a mixture of three inorganic species, being the potassium peroxymonosulfate (KHSO5) the reactive one. Over the past few decades, this cheap and environmentally friendly oxidant has become a power
Externí odkaz:
https://doaj.org/article/c62d1733bbf74342acde54feac920bc0
Autor:
Helen A. Goulart, Daniela R. Araujo, Lucas E. B. Iarocz, Bruna R. Pizzi, Thiago Barcellos, Márcio S. Silva, Gelson Perin
Publikováno v:
European Journal of Organic Chemistry. 26
Autor:
Angelita M. Barcellos, Helen A. Goulart, Gelson Perin, Raquel G. Jacob, Krigor B. Silva, Eder J. Lenardão, Thiago Barcellos, José S. S. Neto, Maiara C. de Moraes
Publikováno v:
The Journal of Organic Chemistry. 86:14016-14027
A new method was developed for the synthesis of 4-chalcogenyl-1H-isochromen-1-ones through the 6-endo-dig electrophilic cyclization of 2-alkynylaryl esters and diorganyl dichalcogenides under ultrasound irradiation. The reactions were performed under
Autor:
Helen A. Goulart, Daniela R. Araujo, Eder J. Lenardão, Gelson Perin, Roberta Cargnelutti, Angelita M. Barcellos
Publikováno v:
The Journal of Organic Chemistry. 86:1721-1729
We report a protocol for the synthesis of 3-organyl-4-(organylchalcogenyl)isoquinoline-2-oxides via electrophilic cyclization between alkynylbenzaldoximes and diorganyl dichalcogenides promoted by ...
Autor:
Helen A. Goulart, Ricardo H. Bartz, Thiago J. Peglow, Angelita M. Barcellos, Rodrigo Cervo, Roberta Cargnelutti, Raquel G. Jacob, Eder J. Lenardão, Gelson Perin
Publikováno v:
The Journal of organic chemistry. 87(6)
We report herein an alternative method for the synthesis of seleno-dibenzocycloheptenones and seleno-spiro[5.5]trienones through the radical cyclization of biaryl ynones in the presence of diorganyl diselenides, using Oxone as a green oxidizing agent
Autor:
Elton L. Borges, Helen A. Goulart, Gelson Perin, Paulo H. Schneider, Guilherme S. Rieder, Pablo A. Nogara, João B. T. da Rocha
Publikováno v:
Chemistrybiodiversity. 19(5)
The present study reports a simple two-step method for the synthesis of arylselanyl hydrazide derivatives using hypophosphorous acid and polyethylene glycol (H
Autor:
Helen A. Goulart, Gelson Perin, Raquel G. Jacob, Angelita M. Barcellos, Thiago Barcellos, Diego Alves, Márcio S. Silva, Eder J. Lenardão, José S. S. Neto
Publikováno v:
Advanced Synthesis & Catalysis. 361:3403-3411
Autor:
Helen A, Goulart, José S S, Neto, Angelita M, Barcellos, Krigor B, Silva, Maiara C, de Moraes, Raquel G, Jacob, Eder J, Lenardão, Thiago, Barcellos, Gelson, Perin
Publikováno v:
The Journal of organic chemistry. 86(20)
A new method was developed for the synthesis of 4-chalcogenyl-1
Autor:
Daniela R, Araujo, Helen A, Goulart, Angelita M, Barcellos, Roberta, Cargnelutti, Eder J, Lenardão, Gelson, Perin
Publikováno v:
The Journal of organic chemistry. 86(2)
We report a protocol for the synthesis of 3-organyl-4-(organylchalcogenyl)isoquinoline-2-oxides via electrophilic cyclization between alkynylbenzaldoximes and diorganyl dichalcogenides promoted by Oxone. A total of 21 3-organyl-4-(organylchalcogenyl)
Autor:
Mikaela P. Pinz, Liane K. Soares, Ethel A. Wilhelm, Ricardo F. Schumacher, Angélica S. Reis, Cristiane Luchese, Gelson Perin, Thiago J. Peglow, Helen A. Goulart
Publikováno v:
Applied Biochemistry and Biotechnology. 187:1398-1423
In the present study, the synthesis of new selenoethers from nucleophilic substitution reaction between organyl halides and nucleophilic species of selenium generated in situ was demonstrated. After, this method was applied for the synthesis of pyrid