A general synthetic route to synthesis of N-cyclohexyl-3-aryl-quinoxaline-2-amines has been developed using ZnO nanoparticles under mild conditions. The multi-component reactions of aldehydes, o-phenylenediamine and cyclohexyl isocyanide were carried out to afford some N-cyclohexyl-3-aryl-quinoxaline-2-amines derivatives. The present approach offers several advantages such as high yields, environmentally benign, easy purification, recovery and reusability of the catalyst.
three-component Ugi reaction of aromatic amines, aromatic or aliphatic aldehydes and cyclohexyl isocyanide with N,N,N′,N′-tetrabromobenzene-1,3-disulfonamide [TBBDA] or poly(N-bromo-N-ethylbenzene-1,3-disulfonamide) [PBBS] as catalysts has been developed. Thin-layer chromatography was used for purification of mono and bisquinoxalines. Mildreaction conditions, good to high yields, cheap and stable catalysts and short
A novel three-component reaction for the synthesis of N-cyclohexyl-3-aryl-quinoxaline-2-amines
作者:Majid M. Heravi、Bita Baghernejad、Hossein A. Oskooie
DOI:10.1016/j.tetlet.2008.11.123
日期:2009.2
Ferric perchlorate catalyzes the three-component condensation reaction of o-phenylenediamine, aromatic alclehydes, and cyclohexyl isocyanide to afford the corresponding N-cyclohexyl-3-aryl-quinoxaline-2-amines in good yields. (C) 2008 Elsevier Ltd. All rights reserved.
Perlite–SO3H nanoparticles: very efficient and reusable catalyst for three-component synthesis of N-cyclohexyl-3-aryl-quinoxaline-2-amine derivatives under ultrasound irradiation
作者:Morteza Rouhani、Ali Ramazani
DOI:10.1007/s13738-018-1426-8
日期:2018.10
An efficient green approach for the synthesis of N-cyclohexyl-3-aryl-quinoxaline-2-amine derivatives, via a three-component one-pot condensation reaction of o-phenylenediamine, aromatic aldehydes and cyclohexyl isocyanide in the presence of perlite–SO3H nanoparticles (diameter/thickness of platelets < 100 nm) underultrasoundirradiation has been demonstrated. The present method offers advantages such