Copper-Catalyzed Aerobic Oxidative Cross-Dehydrogenative Coupling of Amine and α-Carbonyl Aldehyde: A Practical and Efficient Approach to α-Ketoamides with Wide Substrate Scope
A copper-catalyzedaerobicoxidative cross-dehydrogenative coupling (CDC) of amine with α-carbonyl aldehyde has been developed. Many types of amines are tolerant in this transformation leading to various α-ketoamides compounds. Wide substrate scope, CDC strategy and using air as oxidant make this transformation highly efficient and practical. Molecular oxygen acts not only as the oxidant, but also
Copper-Catalyzed Aerobic Oxidative Coupling of Aryl Acetaldehydes with Anilines Leading to α-Ketoamides
作者:Chun Zhang、Zejun Xu、Liangren Zhang、Ning Jiao
DOI:10.1002/anie.201105285
日期:2011.11.18
reaction provides an efficient route to α‐ketoamides compounds, which are ubiquitous structural units in a number of biologically active compounds. N‐substituted anilines are suitable substrates for this transformation. Two CH bonds as well as one CH and one NH bond are cleaved in this reaction. Molecular oxygen (1 atm) is used as the oxidant and the reaction involves dioxygen activation.
A general metal free approach to α-ketoamides via oxidative amidation–diketonization of terminal alkynes
作者:Ramesh Deshidi、Manjeet Kumar、Shekaraiah Devari、Bhahwal Ali Shah
DOI:10.1039/c4cc03783a
日期:——
A metal free catalytic system employing TMSOTf/I2/DMSO for the oxidative amidation–diketonization of terminal alkynes, in order to produce a wide variety of α-ketoamides, has been developed.
Dioxygen Activation under Ambient Conditions: Cu-Catalyzed Oxidative Amidation−Diketonization of Terminal Alkynes Leading to α-Ketoamides
作者:Chun Zhang、Ning Jiao
DOI:10.1021/ja908911n
日期:2010.1.13
A novel Cu-catalyzed oxidative amidation-diketonization reaction of terminal alkynes leading to alpha-ketoamides has been developed. This chemistry offers a valuable mechanistic insight into this novel Cu catalysis via a radical process. O-2 not only participates as the ideal oxidant but also undergoes dioxygen activation under ambient conditions in this transformation.