A Catalyst-Free, One-Pot, Three-Component Approach for the Synthesis of 2-[1-Aryl-2-(azaaryl)ethyl]malononitriles via sp3 C–H Activation of 2-Methyl Azaarenes
Combinatorial libraries of 2-[1-aryl-2-(azaaryl)ethyl]malononitriles derivatives have been synthesized by catalyst-free, one-pot, three-component protocol and employing water as a solvent. Simple reaction, open air reaction, and easy isolation are added advantages of this method. The method is applicable for aryl as well as heteroaryl systems and provides a convenient access for the synthesis of novel quinoline
PEG-400 mediated sp 3 C H functionalization of aza-arenes: an enroute to the synthesis of 2-(2-(6-methylpyridin/quinolin-2-yl)-1-phenylethyl)malononitriles
Polyethylene glycol (PEG-400) has been discovered to be an effective eco-friendly solvent cum activator for the one-pot coupling of 2,6-dimethyl-pyridine or 2-methylquinoline, malononitrile and aldehydes to produce aza-arene derivatives through a sp(3) bond functionalization. The reaction was performed under mild conditions and the generality of the one-pot reaction was investigated. (C) 2016 Elsevier Ltd. All rights reserved.