Pyridazine

Zohdi, H. F., F. A. Khalifa, A. O. Abdelhamide, and A.A.El-Tourgman, "Heterocycles from Nitrile Oxides: Synthesis of some New Isoxazoles, pyrrolidino[3,4-d]isoxazoles and Isoxazolo[3,4-d]pyridazines", J. Chem. Res., pp. (S)322, 1991.
Abdelhamid, A. O., H. F. Zohdi, M. M. M. Sallam, and N. A. Ahmed, "Reactions with Hydrazonoyl Halides. 31. Synthesis of Some New Pyrrolidino[3,4-c]pyrazolines, Pyrazoles and Pyrazolo[3,4-d]pyridazines", Molecules, vol. 5, pp. 967-973, 2000. molecules__2000__5_967-973.pdf
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