Insertion of Benzene Rings into the Amide Bond: One-Step Synthesis of Acridines and Acridones from Aryl Amides
作者:Didier G. Pintori、Michael F. Greaney
DOI:10.1021/ol902568x
日期:2010.1.1
Insertion of benzene rings into the amide bond using the reactive intermediate benzyne is described. Aromatic amides undergo smooth insertion when treated with O-triflatophenyl silane benzyne precursors, producing versatile aminobenzophenone products in good to excellent yield. The process is entirely metal-free and has been exemplified on the synthesis of biologically active acridones and acridines
A novel C–N coupling of various arylamines with dialkyl azodicarboxylates under metal-free conditions for the rapid assembly of carbamates has been achieved. This established protocol features mild reaction conditions, simple operation, broad substrate scope, moderate to excellent yields and good tolerance of functional groups. Moreover, the potential synthetic utility of products was exemplified by
N-Benzyloxycarbonylation of amines in the ionic liquid [TPA][l-Pro] as an efficient reaction medium
作者:N. Suryakiran、K. Chinni Mahesh、D. Ramesh、J. Jon Paul Selvam、Y. Venkateswarlu
DOI:10.1016/j.tetlet.2008.02.108
日期:2008.4
An efficient method for the N-benzyloxycarbonylation of amines is described. The reaction of amines with Cbz-Cl in the ionic liquid [TPA][L-Pro] afforded the corresponding N-Cbz derivatives in excellent yields. The method is versatile for the preparation of a wide variety of N-Cbz derivatives of aliphatic and aromatic amines. (C) 2008 Elsevier Ltd. All rights reserved.