Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
171230 | Comptes Rendus Chimie | 2011 | 4 Pages |
Abstract
(2-Amino-3-cyano-4H-chromen-4-yl) phosphonic acid diethyl esters are prepared via a single-step multi-component reaction of structurally diverse salicylaldehydes with malononitrile and triethyl phosphite using a catalytic amount of potassium phosphate in ethanol at ambient temperature. Use of potassium phosphate as an inexpensive catalyst makes the protocol more economical. Mild reaction conditions, simple work-up procedure are the added advantages of the present method.
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Authors
D.S. Gaikwad, K.A. Undale, T.S. Shaikh, D.M. Pore,