[EN] REDOX DEHYDRATION COUPLING CATALYSTS AND METHODS RELATED THERETO<br/>[FR] CATALYSEURS DE COUPLAGE DE DÉSHYDRATATION RÉDOX ET PROCÉDÉS ASSOCIÉS À CEUX-CI
申请人:UNIV EMORY
公开号:WO2017070157A1
公开(公告)日:2017-04-27
This disclosure relates to synthetic coupling methods using catalytic molecules. In certain embodiments, the catalytic molecules comprise heterocyclic thiolamide, S-acylthiosalicylamide, disulfide, selenium containing heterocycle, diselenide compound, ditelluride compound or tellurium containing heterocycle. Catalytic molecules disclosed herein are useful as catalysts in the transformation of hydroxy group containing compounds to amides, esters, ketones, and other carbon to heteroatom or carbon to carbon transformations.
Benzoisothiazolone Organo/Copper-Cocatalyzed Redox Dehydrative Construction of Amides and Peptides from Carboxylic Acids using (EtO)<sub>3</sub>P as the Reductant and O<sub>2</sub> in Air as the Terminal Oxidant
作者:Lanny S. Liebeskind、Pavankumar Gangireddy、Matthew G. Lindale
DOI:10.1021/jacs.6b03168
日期:2016.6.1
Carboxylic acids and amine/amino acid reactants can be converted to amides and peptides at neutral pH within 5-36 h at 50 °C using catalytic quantities of a redox-active benzoisothiazolone and a copper complex. These catalytic "oxidation-reduction condensation" reactions are carried out open to dry air using O2 as the terminal oxidant and a slight excess of triethyl phosphite as the reductant. Triethyl