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Current Organic Synthesis


ISSN (Print): 1570-1794
ISSN (Online): 1875-6271

Review Article

The Molecular Diversity Scope of Urazole in the Synthesis of Organic Compounds

Author(s): Ghodsi M. Ziarani *, Fatemeh Mohajer, Razieh Moradi and Parisa Mofatehnia

Volume 16 , Issue 7 , 2019

Page: [953 - 967] Pages: 15

DOI: 10.2174/1570179416666190925162215

Price: $65


Background: As a matter of fact, nitrogen as a hetero atom among other atoms has had an important role in active biological compounds. Since heterocyclic molecules with nitrogen are highly demanded due to biological properties, 4-phenylurazole as a compound containing nitrogen might be important in the multicomponent reaction used in agrochemicals, and pharmaceuticals. Considering the case of fused derivatives “pyrazolourazoles” which are highly applicable because of their application for analgesic, antibacterial, anti-inflammatory and antidiabetic activities as HSP-72 induction inhibitors (I and III) and novel microtubule assembly inhibitors. It should be mentioned that spiro-pyrazole also has biological activities like cytotoxic, antimicrobial, anticonvulsant, antifungal, anticancer, anti-inflammatory, and cardiotonic activities.

Objective: Urazole has been used in many heterocyclic compounds which are valuable in organic syntheses. This review disclosed the advances in the use of urazole as the starting material in the synthesis of various biologically active molecules from 2006 to 2019.

Conclusion: Compounds of urazole (1,2,4-triazolidine-3,5-dione) are the most important molecules which are highly active from the biological perspective in the pharmaceuticals as well as polymers. In summary, many protocols for preparations of the urazole derivatives from various substrates in multi-component reactions have been reported from different aromatic and aliphatic groups which have had carbonyl groups in their structures. It is noted that several catalysts have been synthesized to afford applicable molecules with urazole scaffolds. In some papers, being environmentally friendly, short time reactions and high yields are highlighted in the protocols. There is a room to synthesize new catalysts and perform new reactions by manipulating urazole to produce biologically active compounds, even producing chiral urazole component as many groups of chiral urazole compounds are important from biological perspective.

Keywords: Triazoloindazoles, spiro triazoloindazoles, pyrazolotriazoles, spiro pyrazolotriazoles, phenyl-[1, 2, 4]- triazolidine derivatives, urazole.

Graphical Abstract
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