Download PDF
Synthesis 1985; 1985(11): 1028-1042
DOI: 10.1055/s-1985-31422
review
© Georg Thieme Verlag, Rüdigerstr. 14, 70469 Stuttgart, Germany. All rights reserved. This journal, including all individual contributions and illustrations published therein, is legally protected by copyright for the duration of the copyright period. Any use, exploitation or commercialization outside the narrow limits set by copyright legislation, without the publisher's consent, is illegal and liable to criminal prosecution. This applies in particular to photostat reproduction, copying, cyclostyling, mimeographing or duplication of any kind, translating, preparation of microfilms, and electronic data processing and storage.

Synthesis of 2-Pyrazolines and 3,5-Pyrazolidinediones

N. R. El-Rayyes* , N. A. Al-Awadi
  • *Department of Chemistry, University of Kuwait, P.O. Box 5969, Kuwait
Further Information

Publication History

Publication Date:
27 September 2002 (online)

  PDF Download  Permissions and Reprints All articles of this category

Methods for the synthesis of 2-pyrazolines (4,5-dihydropyrazoles) and 3,5-pyrazolidinediones (3,5-dioxotetrahydropyrazoles) are reviewed. These compounds have found wide use in the chemical, textile and pharmaceutical industries. 1. Introduction 2. Synthesis of 2-Pyrazolines 2.1. Hydrazine-Based Reactions 2.2. Cyclization Reactions 2.3. 1,3-Dipolar Cycloaddition Reactions 2.4. Miscellaneous Pyrazoline Syntheses 3. Synthesis of 3,5-Pyrazolidinediones 3.1. Reaction of Malonic Acids or their Derivatives with Hydrazines 3.2. Reaction of Carbon Suboxide with Hydrazines 3.3. Oxidation of Malonic Acid Amides 3.4. Cyclization Reactions 3.5. Miscellaneous Syntheses

      >