Molecules 2011, 16(11), 9041-9048; doi:10.3390/molecules16119041
Article

One-Pot and Efficient Synthesis of Triazolo[1,2-a]indazole-triones via Reaction of Arylaldehydes with Urazole and Dimedone Catalyzed by Silica Nanoparticles Prepared from Rice Husk

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Received: 19 September 2011; in revised form: 13 October 2011 / Accepted: 20 October 2011 / Published: 26 October 2011
(This article belongs to the Special Issue Microwave Assisted Synthesis)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A novel synthesis of triazolo[1,2-a]indazole-1,3,8-trione derivatives by reaction of urazole, dimedone and aromatic aldehydes under conventional heating and microwave irradiation and solvent-free conditions using silica nanoparticles prepared from rice husk ash as catalyst is described. The new method features high yields, multicomponent reactions and environmental friendliness.
Keywords: multicomponent reaction; nanosilica sulfuric acid; microwave irradiation; rice husk
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MDPI and ACS Style

Hamidian, H.; Fozooni, S.; Hassankhani, A.; Mohammadi, S.Z. One-Pot and Efficient Synthesis of Triazolo[1,2-a]indazole-triones via Reaction of Arylaldehydes with Urazole and Dimedone Catalyzed by Silica Nanoparticles Prepared from Rice Husk. Molecules 2011, 16, 9041-9048.

AMA Style

Hamidian H, Fozooni S, Hassankhani A, Mohammadi SZ. One-Pot and Efficient Synthesis of Triazolo[1,2-a]indazole-triones via Reaction of Arylaldehydes with Urazole and Dimedone Catalyzed by Silica Nanoparticles Prepared from Rice Husk. Molecules. 2011; 16(11):9041-9048.

Chicago/Turabian Style

Hamidian, Hooshang; Fozooni, Samieh; Hassankhani, Asadollah; Mohammadi, Sayed Zia. 2011. "One-Pot and Efficient Synthesis of Triazolo[1,2-a]indazole-triones via Reaction of Arylaldehydes with Urazole and Dimedone Catalyzed by Silica Nanoparticles Prepared from Rice Husk." Molecules 16, no. 11: 9041-9048.

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