Radical-Induced Metal and Solvent-Free Cross-Coupling Using TBAI–TBHP: Oxidative Amidation of Aldehydes and Alcohols with <i>N</i>-Chloramines via C–H Activation
作者:Tapas Kumar Achar、Prasenjit Mal
DOI:10.1021/jo502464n
日期:2015.1.2
A solvent-free cross-coupling method for oxidative amidation of aldehydes and alcohols via a metal-free radial pathway has been demonstrated. The proposed methodology uses the TBAI-TBHP combination which efficiently induces metal-free C–H activation of aldehydes under neat conditions at 50 °C or ball-milling conditions at room temperature.
Dioxygen-Promoted Pd-Catalyzed Aminocarbonylation of Organoboronic Acids with Amines and CO: A Direct Approach to Tertiary Amides
作者:Long Ren、Xinwei Li、Ning Jiao
DOI:10.1021/acs.orglett.6b02913
日期:2016.11.18
A direct approach from organoboronic acids and amines to tertiary amides via Pd-catalyzed aerobic aminocarbonylation has been developed. The presence of O2 significantly promotes the efficiency of this transformation. This method uses commercially available organoboronic acids and cheap CO and O2 (1 atm), which renders amides an easy synthesis with broad substrate scope and high functional group tolerance
Metal-Free One-Pot Oxidative Amination of Aldehydes to Amides
作者:Kekeli Ekoue-Kovi、Christian Wolf
DOI:10.1021/ol7014626
日期:2007.8.1
Metal-free oxidativeamination of aromatic aldehydes in the presence of TBHP provides convenient access to amides in 85-99% under mild reaction conditions within 5 h. This method avoids free carboxylic acid intermediates and integrates aldehyde oxidation and amide bond formation, which are usually accomplished separately, into a single operation. Proline-derived amides can be prepared in excellent