Abstract

One-pot, three-component reactions of structurally diverse salicylaldehydes with malononitrile (or ethylcyanoacetate) and diethyl (or dimethyl) phosphate are carried out in the presence of nano-rods ZnO as an efficient catalyst for the synthesis of biologically interesting 2-amino-4H-chromen-4-yl phosphonate derivatives. The value of this method lies in its mild and environmentally benign reaction, simple procedure, good yields, and ease of handling.

Keywords: 2-amino-4H-chromen-4-yl phosphonate, nano rods ZnO, solvent-free, three-component reactions.