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Synfacts 2010(7): 0840-0840  
DOI: 10.1055/s-0029-1220092
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart ˙ New York

Synthesis of Indazole-1,3,8-triones Using an Aluminosilicate Catalyst

Contributor(s): Yasuhiro Uozumi, Aya Tazawa
M. A. Chari, G. Karthikeyan, A. Pandurangan, T. S. Naidu, B. Sathyaseelan, S. M. J. Zaidi, A. Vinu*
National Institute for Material Science, Tsukuba, Japan; Anna University, Chennai, India and King Fahd University of Petroleum & Minerals, Dhahran, Saudi Arabia
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Publikationsdatum:
22. Juni 2010 (online)

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Significance

A 3D mesoporous aluminosilicate (AlKIT-5) catalyzed the three-component condensation of dimedone (1), urazole (2), and benzaldehydes 3 to give the corresponding triazolo[1,2-a]-indazole-1,3,8-trione derivatives 4 in 80-96% yield (10 examples).