Metal- and Solvent-Free Approach to Access 3-Se/S-Chromones from the Cyclization of Enaminones in the Presence of Dichalcogenides Catalyzed by KIO3\

Author(s)

Rafique, Jamal ; Saba, Sumbal ; Schneider, Alex R. ; Franco, Marcelo S. ; Silva, Symara M. ; Braga, Antonio L.

• Document type: Journal article
• Source: ACS OMEGA; v. 2, n. 5, p. 11-pg., 2017-05-01.

Abstract

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 2hydroxyphenyl enaminones and half equivalents of various odorless diorganyl dichalcogenides (S/ Se) in the presence of glycerol (5 molar equiv) and KIO3 (15 mol %) as the catalyst under solvent-free conditions. (AU)

• FAPESP's process: 14/50249-8 - Green chemistry: sustainable synthetic methods employing benign solvents, safer reagents, and bio-renewable feedstock
• Grantee: Arlene Gonçalves Corrêa
• Support Opportunities: Research Grants - Research Centers in Engineering Program