1599461-85-4Relevant academic research and scientific papers
Direct, Metal-free C(sp2)?H Chalcogenation of Indoles and Imidazopyridines with Dichalcogenides Catalysed by KIO3
Rafique, Jamal,Saba, Sumbal,Franco, Marcelo S.,Bettanin, Luana,Schneider, Alex R.,Silva, Lais T.,Braga, Antonio L.
, p. 4173 - 4180 (2018)
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, easy-to-handle catalyst and a stoichiometric amount of glycerol. The reaction features are high yields, based on atom economy, easy performance on gram-scale, metal- and solvent-free conditions as well as applicability to different types of N-heteroarenes.
Rose Bengal catalysed photo-induced selenylation of indoles, imidazoles and arenes: A metal free approach
Saba, Sumbal,Rafique, Jamal,Franco, Marcelo S.,Schneider, Alex R.,Espíndola, Leandro,Silva, Dagoberto O.,Braga, Antonio L.
supporting information, p. 880 - 885 (2018/02/19)
In this report, the highly efficient Rose Bengal-catalysed C(sp2)-H selenylation of indoles, imidazoles and arenes was achieved using a half molar equiv. of diorganoyl diselenides. This metal-free, photo-induced protocol resulted in selenylated
Synthesis of 3-Selenylindoles under Ecofriendly Conditions
Ferreira, Natasha L.,Azeredo, Juliano B.,Fiorentin, Breno L.,Braga, Antonio L.
supporting information, p. 5070 - 5074 (2015/08/18)
The preparation of biologically relevant 3-selenylindoles by a greener protocol by using a catalytic amount of K2CO3 and ethanol as a biosolvent in a system open to air was explored. Through this easy approach, 3-selenylindoles with
A solvent- and metal-free synthesis of 3-chacogenyl-indoles employing DMSO/I2 as an eco-friendly catalytic oxidation system
Azeredo, Juliano B.,Godoi, Marcelo,Martins, Guilherme M.,Silveira, Claudio C.,Braga, Antonio L.
, p. 4125 - 4130 (2014/05/20)
Herein, we describe a solvent- and metal-free method for the synthesis of 3-chalcogenyl-indoles from indoles and diorganyl dichalcogenides using an equivalent amount of DMSO as an oxidant, under catalysis by molecular iodine. This mild and eco-friendly ap
