Solvent-free copper-catalyzed N-arylation of amino alcohols and diamines with aryl halides
摘要:
A simple and mild method for the coupling of aryl halides with amino alcohols and diamines is described. The reactions can be performed under ligand-free and solvent-free conditions, and generate the products in good yield. (C) 2012 Elsevier Ltd. All rights reserved.
A magnetic nanoparticle-catalyzed regioselectivering opening of epoxides by aromatic amines
作者:Najmedin Azizi、Parisa Kamrani、Mostafa Saadat
DOI:10.1002/aoc.3450
日期:2016.6
Sulfonicacid‐functionalized silica‐coated magnetic Fe3O4 nanoparticles were synthesized and applied as a green catalyst for an efficient and environmentally friendly ring opening of epoxides with aromatic amines in good to excellent yields with high chemoselectivity. Clean aminolysis of various aliphatic and aromatic epoxides in ethanol generates β‐hydroxyamines undermild reaction conditions. The
Highly efficient ring opening reactions of epoxides with deactivated aromatic amines catalyzed by heteropoly acids in water
作者:Najmedin Azizi、Mohammad R. Saidi
DOI:10.1016/j.tet.2006.11.045
日期:2007.1
Heteropoly acid was found to be an effective and efficient catalyst for the ring opening reaction of epoxides with various aromatic amines to produce the corresponding β-amino alcohols in moderate to excellent yields in water. This method provides a new and efficient protocol in terms of mild reaction conditions, clean reaction profiles, small quantity of catalyst, and simple work-up procedure.
Graphite oxide as a heterogeneous and recyclable solid acid catalyzed a simple and efficient method for the synthesis of $\beta $-amino alcohols by ring opening of epoxides with amines. This method is effective with various aromatic and aliphatic amines under solvent-free conditions. The corresponding $\beta $-amino alcohols are obtained in high yields (56%-95%) and short reaction times (15-30 min) with high regio- and chemoselectivity under metal-free conditions.
Catalyst-free regioselective ring opening of epoxides with aromatic amines in water and solvent-free conditions
作者:A. Ziyaei-Halimehjani、H. Gholami、M. R. Saidi
DOI:10.1007/s13738-012-0122-3
日期:2013.2
Without using any catalysts, a variety of epoxides undergo ring-opening by aromatic amines to afford the corresponding 1,2-amino alcohols in high to excellent yields with good regioselectivity in the presence of water as solvent and under solvent-free conditions.
Decomplexation of (η-arene)(η-cyciopentadienyl)iron(<scp>II</scp>) hexafluorophosphates: a convenient one-pot arylation procedure
作者:Richard A. Brown、Sharon I. S. Fernando、Roger M. G. Roberts
DOI:10.1039/p19940000197
日期:——
light sensitive. Bipyridine gave much lower yields. Potassium tert-butoxide in pyridine or DMSO was found to be an excellent demetallating agent even with sterically crowded complexes. A one-pot arylation procedure was developed and extended to include a number of important heterocyclic derivatives. The mechanism of these decomplexation reactions is briefly addressed.