Ultrasound-promoted synthesis of 2-amino-6-(arylthio)-4-arylpyridine-3,5- dicarbonitriles using ZrOCl2·8H2O/NaNH2 as the catalyst in the ionic liquid [bmim]BF4 at room temperature

Article abstract of DOI:10.1016/j.tetlet.2011.10.031

We herein present an efficient and environmentally benign protocol for the synthesis of 2-amino-6-(arylthio)-4-arylpyridine-3,5-dicarbonitrile derivatives via the three-component condensation of a variety of aldehydes, arylthiols, and malononitrile cataly