Metal-free tandem Beckmann–electrophilic aromatic substitution cascade affording diaryl imines, ketones, amines, and quinazolines
作者:Samuel R.S. Sarsah、Marlon R. Lutz、Kailyn Chichi Bobb、Daniel P. Becker
DOI:10.1016/j.tetlet.2015.07.095
日期:2015.9
A cascade reaction sequence involving a Beckmann rearrangement on benzophenone oxime followed by an electrophilic aromatic substitution (EAS) on the intermediate nitrilium ion affords N-phenyl diaryl imines that may then be hydrolyzed to ketones, or reduced to the corresponding amines. Reaction with benzonitrile afforded 2,4-diphenylquinazoline through a Beckmann–Ritter–EAS cascade.
A Mild, One-Pot Synthesis of Arylamines<i>via</i>Palladium- Catalyzed Addition of Aryl Aldehydes with Amines and Arylboronic Acids in Water
作者:Ajuan Yu、Yangjie Wu、Baoli Cheng、Kun Wei、Jingya Li
DOI:10.1002/adsc.200800680
日期:2009.3
Abstractmagnified imageA mild, one‐pot synthesis of diarylmethylamines via the palladium‐catalyzed addition of aryl aldehydes with amines and arylboronic acids is reported. Best results were obtained in neat water with ammonium chloride as additive, affording diarylmethylamine derivatives as the main products.