Condensation of 3‐cyano‐7‐diethylamino‐N‐ethoxycarbonyl‐iminocoumarin with various hydrazides as N‐nucleophiles gave a new series of 2‐oxo‐2H‐1‐benzopyrano[2,3‐d]pyrimidines bearing an acylhydrazino fragment in the 4‐position. The structures of the products obtained were characterized using IR, 1H NMR, 13C NMR and elemental analysis. The optical properties were reported for three of these compounds. J. Heterocyclic Chem., (2009).
Fused pyrimidine derivatives R 0515Reactivity of 3-Cyano-N-ethoxycarbonyl-iminocoumarin with Hydrazides as N-Nucleophiles. -New benzopyrano[2,3-d]pyrimidines (III) are synthesized and selected products are studied for their UV and fluorescence properties. The limited solubility in most organic solvents could be a drawback for subsequent applications. -(KAMMOUN, M.; TURKI, H.; EL GHARBI*, R.; FERY-FORGUES, S.; J.
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