Rapid and Efficient One-Pot Synthesis of 3,4-Dihydroquinoxalin-2-Amine Derivatives Catalyzed by Co<sub>3</sub>O<sub>4</sub>@SiO<sub>2</sub> Core-Shell Nanoparticles Under Ultrasound Irradiation
作者:Mohammad Ali Ghasemzadeh、Boshra Mirhosseini-Eshkevari、Mohammad Hossein Abdollahi-Basir
DOI:10.2174/1386207319666160524141831
日期:2016.7.12
three-component reactions of ophenylenediamines (OPDA), diverse ketones and various isocyanides in ethanol underultrasoundirradiation. The combinatorial synthesis was attained for this procedure with applying ultrasoundirradiation while making use of ethanol as green ambient. The present approach offers several advantages such as high yields, environmentally benign, simple work-up, excellent yield of products
Visible-Light-Mediated Synthesis of 4H-benzo[1,4]thiazin-2-amines and 3,4-Dihydroquinoxalin-2-amines: An Efficient and Metal Free Route to C–S, C–N Bond Formation
作者:Neetu Yadav、Hozeyfa Sagir、Mohd. Danish Ansari、I. R. Siddiqui
DOI:10.1007/s10562-018-2388-2
日期:2018.6
and practical synthesis of benzothiazine by visible-light-mediated free radical reaction has been developed. This protocol provides a new, facile, eco-friendly strategy to construct benzothiazine and quinoxaline derivatives via formation of C–S and C–N bonds under metal-free condition. This synthesis has been performed under visible light illumination in aqueous ethanol at roomtemperature using aromatic
Here we demonstrate on the synthesis of multifunctional 3,4-dihydroquinoxalin-2-amine derivatives through a three-component condensation of substituted o-phenylenediamines (OPDA), diverse ketones, and various isocyanides in the presence of AlKIT-5 catalyst which was found to be highly active and selective, affording excellent yields (85-98%) in ethanol at room temperature (2-4 h).
Amberlyst-15: an efficient and reusable catalyst for multi-component synthesis of 3,4-dihydroquinoxalin-2-amine derivatives at room temperature
作者:Murugulla Adharvana Chari
DOI:10.1016/j.tetlet.2011.09.015
日期:2011.11
We demonstrate on the synthesis of multifunctional 3,4-dihydroquinoxalin-2-amine derivatives through a three-component condensation of substituted o-phenylenediamines (OPDA), diverse ketones, and various isocyanides in the presence of an efficient and reusable amberlyst-15 catalyst which was found to be highly active and afforded excellent yields (85–99%) in ethanol at room temperature (2–3 h).
EDTA-catalyzed synthesis of 3,4-dihydroquinoxalin-2-amine derivatives by a three-component coupling of one-pot condensation reactions in an aqueous medium
作者:Srinivasa Rao Kolla、Yong Rok Lee
DOI:10.1016/j.tet.2010.09.050
日期:2010.11
This paper describes a simple and efficient one-pot synthetic approach for the preparation of biologically interesting 3,4-dihydroquinoxalin-2-amine derivatives using EDTA-catalyzed three-component reactions of o-phenylenediamines, carbonyl compounds, and isocyanides in an aqueous medium. This method is of great value because of its environmentally benign character, high yields, and ease of handling. (C) 2010 Elsevier Ltd. All rights reserved.