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DOI: 10.1055/s-0030-1258468
Unusual Direction of Cyclocondensation of 1-(4-Chlorophenyl)-3,5-diamino-1,2,4-triazole, Pyruvic Acid, and Aldehydes
Publication History
Publication Date:
08 March 2011 (online)
Abstract
The reactivity of 1-(4-chlorophenyl)-3,5-diamino-1,2,4-triazole in multicomponent reactions with pyruvic acid and aldehydes and in two-component reactions with arylidenepyruvic acid was studied. The unusual direction of these treatments leading to the formation of unprecedented 3-[5-amino-1-(4-chlorophenyl)-1,2,4-triazol-3-ylamino]-5-arylfuran-2-ones instead of triazolopyrimidine or triazolylpyrrolone derivatives was found and discussed.
Key words
heterocycles - multicomponent reaction - furans - nucleophiles - regioselectivity
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References
The final atomic coordinates, and crystallographic data for molecule 11c have been deposited to with the Cambridge Crystallographic Data Centre, 12 Union Road, CB2 1EZ, UK [fax: +44(1223)336033; e-mail: deposit@ccdc.cam.ac.uk] and are available on request quoting the deposition number CCDC 793788.