Aqueous media preparation of 2-amino-4,6-diphenylnicotinonitriles using cellulose sulfuric acid as an efficient catalyst
作者:Syed Sheik Mansoor、Krishnamoorthy Aswin、Kuppan Logaiya、Prasanna Nithiya Sudhan、Saleem Malik
DOI:10.1007/s11164-012-1008-9
日期:2014.2
es via four-component reaction of aromatic aldehydes, acetophenone derivatives, malononitrile and ammonium acetate is described. The reactions were done in water as solvent using cellulose sulfuric acid as catalyst. This simple protocol offer advantages such as shorter reaction times, simple work-up procedure, excellent yields and catalyst recovery.