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.
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