Collect. Czech. Chem. Commun.
1992, 57, 1570-1574
https://doi.org/10.1135/cccc19921570
Nitriles in Heterocyclic Synthesis: A New Synthesis of Some 4H-Naphthopyrans, 2H-Benzothiopyrans and Their Fused Derivatives
Abdel-Fattah A. Harba, Awatef M. El-Maghrabya and Saoud A. Metwallyb
a Faculty of Science, Qena, A. R. Egypt
b Faculty of Science, Assiut University, Assiut, A. R. Egypt
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