A One-Pot Copper Catalyzed Biomimetic Route to <i>N</i>-Heterocyclic Amides from Methyl Ketones via Oxidative C–C Bond Cleavage
作者:Parthasarathi Subramanian、Satrajit Indu、Krishna P. Kaliappan
DOI:10.1021/ol5031266
日期:2014.12.5
A direct one-pot Cu-catalyzed biomimetic oxidation of methyl ketones to pharmaceutically important N-heterocyclic amides is reported. The scope of the method is broad, scalable, and mild, and the reaction is tolerant with various acid, base sensitive functionalities with multiple heteroatoms and aryl halides. The extensive mechanistic studies suggest that this reaction follows the Luciferin-Luciferase-like
Electrochemistry of Aminoazines and Nitrones: Electrochemical Reductions of 2-Amino-1,4-pyrazine with Nitrones to Form Amide Compounds and Electrochemical Oxidations of Anilines with Nitrones to Form Imine Compounds and Benzaldehydes
Electrochemical reductions of 2-amino-1,4-pyrazine in the presence of nitrone derivatives afforded two types of amide compounds, one of which was derived from both the pyrazine and the nitrones and the other from only the nitrones. The analogous reactions but using 2-aminopyridine or aniline instead of the pyrazine resulted in the recovery of the starting materials. On the other hand, electrochemical oxidations of the aminoazine derivatives in the presence of nitrones did not afford any isolatable products. However the reaction using aniline derivatives formed imine compounds accompanied by benzaldehyde derivatives.