Cyclization of 3-ethoxycarbonyliminocoumarin into benzopyrano[2,3-c]pyrazoles
Written by sctunisie no commentsNew rearrangements of 3-ethoxycarbonyl iminocoumarin into benzopyrano[2,3-c]pyrazole under the action of various hydrazines and hydrazides as N-nucleophiles, were described. The structures of all the synthesized products were characterized by IR, 1H NMR, 13C NMR and elemental analysis.
N. Abid-Jarraya, H. Turki-Guermazi, H. Ammar, S. Abid, R. El Gharbi
Iminocoumarin, benzopyrano[2,3-c]pyrazole, hydrazide, hydrazine
Pages 75-81