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Molecules 2000, 5(7), 967-973; doi:10.3390/50700967
Article

Reactions with Hydrazonoyl Halides. 31. Synthesis of Some New Pyrrolidino[3,4-c]pyrazolines, Pyrazoles, and Pyrazolo[3,4-d]pyridazines

1,* , 2, 1 and 1
1 Department of Chemistry, Faculty of Science, Cairo University, Giza 12613, Egypt 2 Department of Chemistry, United Arab Emirates University, Al-Ain 17551, UAE
* Author to whom correspondence should be addressed.
Received: 29 May 2000 / Revised: 6 July 2000 / Accepted: 6 June 2000 / Published: 21 June 2000
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Abstract

Pyrrolidino[3,4-c]pyrazoline and pyrazole derivatives were synthesized via reactions of a substituted hydrazonoyl bromide with N-arylmaleimides and active methylene reagents, respectively. Synthesized pyrazoles were reacted with hydrazine hydrate to give the corresponding pyrazolo[3,4-d]pyridazines.
Keywords: hydrazonoyl halides; N-arylmaleimides; pyrrolidino[3; 4-c]pyrazolines; pyrazoles; pyrazolo[3; 4-d]pyridazines hydrazonoyl halides; N-arylmaleimides; pyrrolidino[3; 4-c]pyrazolines; pyrazoles; pyrazolo[3; 4-d]pyridazines
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Abdelhamid, A.O.; Zohdi, H.F.; Sallam, M.M.M.; Ahmed, N.A. Reactions with Hydrazonoyl Halides. 31. Synthesis of Some New Pyrrolidino[3,4-c]pyrazolines, Pyrazoles, and Pyrazolo[3,4-d]pyridazines. Molecules 2000, 5, 967-973.

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