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Synthesis 2011(18): 2913-2920
DOI: 10.1055/s-0030-1260154
DOI: 10.1055/s-0030-1260154
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
Synthesis of N-Alkyl-2-aryl-5H-imidazo[1,2-b]pyrazol-3-amines by a Three-Component Condensation Reaction
Weitere Informationen
Received
12 May 2011
Publikationsdatum:
05. August 2011 (online)
Publikationsverlauf
Publikationsdatum:
05. August 2011 (online)
Abstract
An efficient method has been developed for the synthesis of a novel series of N-alkyl-2-aryl-5H-imidazo[1,2-b]pyrazol-3-amines in good-to-high yields by the three-component condensation of an aromatic aldehyde, an aminopyrazole, and an isocyanide in acetonitrile with 4-toluenesulfonic acid as a catalyst at room temperature.
Key words
multicomponent reactions - condensation - heterocycles - aldehydes - amines - polycycles
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