Efficient Method to Synthesize Benzhydrazides by In Situ
Oxidation/Coupling of Benzylic Alcohols with Azodicarboxylates
作者:Kobra Azizi、Akbar Heydari
DOI:10.1055/s-0036-1591311
日期:2018.1
An efficient synthesis of benzhydrazides has been achieved through the direct acylation of azodicarboxylates with benzylicalcohols in moderate to high yields. The method represents the first practical approach to amides containing a hydrazine structural unit frombenzylicalcohols.
One-Pot Amide Bond Formation from Aldehydes and Amines via a Photoorganocatalytic Activation of Aldehydes
作者:Giorgos N. Papadopoulos、Christoforos G. Kokotos
DOI:10.1021/acs.joc.6b00488
日期:2016.8.19
environmentally friendly synthesis of amides from aldehydes and amines is described. Initially, a photoorganocatalytic reaction of aldehydes with di-isopropyl azodicarboxylate leads to an intermediate carbonyl imide, which can react with a variety of amines to afford the desired amides. The initial visible light-mediated activation of a variety of monosubstituted or disubstituted aldehydes is usually fast,
Transition-Metal-Catalyzed Aldehydic C−H Activation by Azodicarboxylates
作者:Daesung Lee、Ryan D. Otte
DOI:10.1021/jo035456o
日期:2004.5.1
Rhodium acetate-catalyzed hydroacylation between aldehydes and an activated form of NN bond was achieved under mild conditions to provide efficient access to a variety of hydrazino imides. Good selectivity for the aldehydic C−Hactivation relative to the ene-type reaction was observed with aldehydes having unsaturation both at terminal and internal positions.
CuO Nanoparticles Supported on Silica: A Simple, Efficient, and Recyclable Catalyst for Hydroacylation Reactions of Aldehydes with Azodicarboxylate
作者:Suleman M. Inamdar、Vinod K. More、Sisir K. Mandal
DOI:10.1246/cl.2012.1484
日期:2012.11.5
We describe a green and efficient procedure for the hydroacylation of aldehydes with diisopropyl azodicarboxylate, using CuO nanoparticles supported on silica (CuO-np/SiO2) as a catalyst, in good to excellent yields. A wide range of aldehydes, including aromatic and aliphatic compounds, were considered. The catalyst is found to be truly heterogeneous in the reaction mixture and can be reused without loss of catalytic activity.
The very efficienthydroacylationreaction of azodicarboxylates, with various aldehydes, was carried successfully out at room temperature in water without the use of a catalyst to obtain a variety of hydrazine imide products in high yields. A wide range of aldehydes, including aliphatic and aromatic compounds, was considered, and the reaction is believed to proceed via a radical mechanism, in which