Online article for Non-subscribers

Pay per view

Heterocycles has a pay-per-view service for Non-subscribers.
You will be able to directly purchase the full text article through PayPal.
Your purchased Paper can be downloaded after the payment is completed.
An e-mail will be sent the URL to download the paper.
If you have any questions, please contact:

Price: ¥ 4,400 (Yen only)
Period: This Article can be accessed for 7 days.

Communication | Regular issue | Vol 19, No. 5, 1982, pp.819-824
Published online, 1st January, 1970
DOI: 10.3987/R-1982-05-0819
Hydrazones as New 4-Electrons Three Atomic Centers in Cycloaddition Reactions: A Novel Approach for the Synthesis of Pyrazole Derivatives

Yehia A. Ibrahim, Sadek E. Abdou, and Sami Selim

*Department of Chemistry, Faculty of Science, University of Cairo, Giza, Egypt


Aromatic aldehydes and acetophenone phenylhydrazones undergo cycloaddition reactions with maleimides to give the pyrrolo[3,4-d]pyrazole derivatives via a novel pericyclic reaction involving easily accessible 4π-electrons neutral three atomic centers.