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) -
Jamal Rafique,
Sumbal Saba,
Alex Schneider,
Marcelo S. Franco,
Symara M. Silva,
Antônio L. Braga
Publication year - 2017
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.7b00445
Subject(s) - catalysis , chemistry , molar ratio , solvent , glycerol , combinatorial chemistry , organic chemistry
Herein, we describe a greener protocol for the one-pot synthesis of 3-Se/S-4 H -chromen-4-ones. The desired products were obtained in good to excellent yields using 2-hydroxyphenyl enaminones and half equivalents of various odorless diorganyl dichalcogenides (S/Se) in the presence of glycerol (5 molar equiv) and KIO 3 (15 mol %) as the catalyst under solvent-free conditions.
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