ChemInform Abstract: Synthesis of a Novel Piperidine‐Functionalized Poly(ethylene glycol) Bridged Dicationic Ionic Liquid and Its Application in One‐Pot Synthesis of Substituted 2‐Amino‐2‐chromenes and 3, 4‐Dihydropyrano[3, 2‐c]chromenes in Aqueous Media. Issue 16 (22nd April 2014) - Wang, Yinglei
Abstract The novel bridged dicationic ionic liquid shown is found to be an efficient and recyclable catalyst for the synthesis of the title chromenes (IV), (VI), and (VIII) via one‐pot three‐component reactions of appropriate activated "phenols" with malononitrile and aromatic aldehydes.