Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Marcelo S, Franco"'
Autor:
José S. S. Neto, Isis J. A. Granja, Marcos R. Scheide, Marcelo S. Franco, Cassio A. O. Moraes, Adilson Beatriz, Dênis P. de Lima, Giancarlo V. Botteselle, Tiago E. A. Frizon, Sumbal Saba, Jamal Rafique, Antonio L. Braga
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-13 (2023)
Abstract In this paper, we report an eco-friendly approach for the C(sp 2)–H bond selenylation of imidazopyridines and other N-heteroarenes as well as simple arenes at ambient temperature. This new protocol consists of the reaction between (N-heter
Externí odkaz:
https://doaj.org/article/70b6d06bf4374f4c85f3d3d438e72616
Autor:
Jamal Rafique, Sumbal Saba, Alex R. Schneider, Marcelo S. Franco, Symara M. Silva, Antonio L. Braga
Publikováno v:
ACS Omega, Vol 2, Iss 5, Pp 2280-2290 (2017)
Externí odkaz:
https://doaj.org/article/1e69189518fc4345b7a8514dbf87be45
Publikováno v:
Angewandte Chemie International Edition. 60:18454-18460
Herein, we report a KIO4 -mediated, sustainable and chemoselective approach for the one-pot C(sp2 )-H bond hydroxymethylation or methylenation of imidazo-heteroarenes with formaldehyde, generated in situ via the oxidative cleavage of ethylene glycol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::827c179f1d716033784acae18ef6ed57
https://doi.org/10.1002/anie.202104503
https://doi.org/10.1002/anie.202104503
Autor:
Fábio Z. Galetto, Cleiton da Silva, Ricardo I. M. Beche, Renata A. Balaguez, Marcelo S. Franco, Francisco F. de Assis, Tiago E. A. Frizon, Xiao Su
Publikováno v:
RSC advances. 12(53)
This study includes a new protocol for the synthesis of primary and secondary β-chalcogen amines (Se, Te and S) from the ring-opening reaction of non-activated 2-oxazolidinones with chalcogenolate anions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a17bb84a679c5392aa387744080b8d7a
https://pubmed.ncbi.nlm.nih.gov/36545628
https://pubmed.ncbi.nlm.nih.gov/36545628
Autor:
Caio R. Dos Santos, Bruno R. Zavarise, Sumbal Saba, Alex R. Schneider, Marcos R. Scheide, Marcelo S. Franco, Antonio L. Braga, Ricardo F. Affeldt, Aline A. S. Naujorks, Jamal Rafique
Publikováno v:
Chemistry – A European Journal. 26:4461-4466
Herein, a greener approach to the eosin Y-Na2 catalyzed, C(sp2 )-H bond azo coupling of imidazoheteroarene with aryl diazonium salts is described, under acid free conditions. This direct photoredox process resulted in the corresponding azo products i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::557ba5a2c53da9837f34e173050394c1
https://doi.org/10.1002/chem.201905308
https://doi.org/10.1002/chem.201905308
Autor:
Fábio Z. Galetto, Antonio L. Braga, Renata A. Balaguez, Sumbal Saba, José S. S. Neto, Marcelo S. Franco, Jamal Rafique, Victor C. de Sá Machado
Publikováno v:
Green Chemistry. 22:3410-3415
Herein, we describe an efficient, rapid and benign protocol for the direct C(sp2)–H bond halogenation (Cl, Br, I) of 2-arylimidazo[1,2-a]pyridines using trihaloisocyanuric acids in ethanol. Furthermore, this sustainable protocol was successfully ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a44d040ac6fe43fc8c2838c107502a3d
https://doi.org/10.1039/d0gc00137f
https://doi.org/10.1039/d0gc00137f
Autor:
Sumbal Saba, Caio R. Dos Santos, Bruno R. Zavarise, Aline A. S. Naujorks, Marcelo S. Franco, Alex R. Schneider, Marcos R. Scheide, Ricardo F. Affeldt, Jamal Rafique, Antonio L. Braga
Publikováno v:
Chemistry – A European Journal. 26
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::29fedaeb1838cf4886ad256f9a440030
https://doi.org/10.1002/chem.202082063
https://doi.org/10.1002/chem.202082063
Autor:
Marcelo S. Franco, Luana Bettanin, Jamal Rafique, Marcelo Godoi, Sumbal Saba, Carlos V. Doerner, Antonio L. Braga
Publikováno v:
Tetrahedron. 74:3971-3980
Herein, we described the NH4I-catalyzed C H bond chalcogenation of N-heteroaryls in the presence of a minimum amount of DMSO/H2O/acetic acid as additives (2.5/2.5/1 M equiv., respectively), under metal-free conditions. Under optimized conditions, a w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c91eaedfd3b7b7550445d8f65e62b734
https://doi.org/10.1016/j.tet.2018.05.084
https://doi.org/10.1016/j.tet.2018.05.084
Autor:
Luana Bettanin, Alex R. Schneider, Jamal Rafique, Marcelo S. Franco, Antonio L. Braga, Lais T. Silva, Sumbal Saba
Publikováno v:
Chemistry - A European Journal. 24:4173-4180
Herein, we report a greener protocol for the synthesis of 3-Se/S-indoles and imidazo[1,2-a]pyridines through direct C(sp2 )-H bond chalcogenation of heteroarenes with half molar equivalents of different dichalcogenides, using KIO3 as a non-toxic, eas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bccfe8fb1d922392bf255174ca0a3da3
https://doi.org/10.1002/chem.201705404
https://doi.org/10.1002/chem.201705404
Autor:
Symara M. Silva, Marcelo S. Franco, Alex R. Schneider, Jamal Rafique, Antonio L. Braga, Sumbal Saba
Publikováno v:
ACS Omega
ACS Omega, Vol 2, Iss 5, Pp 2280-2290 (2017)
ACS Omega, Vol 2, Iss 5, Pp 2280-2290 (2017)
Herein, we describe a greener protocol for the one-pot synthesis of 3-Se/S-4H-chromen-4-ones. The desired products were obtained in good to excellent yields using 2-hydroxyphenyl enaminones and half equivalents of various odorless diorganyl dichalcog
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ad9260bef0629a6ea3031853203fa10
http://europepmc.org/articles/PMC6641037
http://europepmc.org/articles/PMC6641037