Abstract
Synthesis of benzopyrano[2,3-c]pyrazoles and 3-triazolonyliminocoumarins was successfully performed using heterocyclization of 3-cyano iminocoumarin or their N-ethoxycarbonylated derivatives with semicarbazide reagents. Elemental analysis, infrared, and 1H NMR spectral data confirmed the molecular structure of the newly synthesized compounds.
GRAPHICAL ABSTRACT
![](/cms/asset/0b189a51-22b1-4d17-b91f-dc3090efab3d/lsyc_a_903422_o_uf0001.gif)
ACKNOWLEDGMENTS
The authors acknowledge Pr. Rachid El Gharbi for his useful discussions about this work.
Notes
a Isolated yield.
a Isolated yield.