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Regioselective Anionic [3+2] Cyclizations of Isoxazole, Pyrazole and 1,2,4-Triazole Dinucleophiles − Efficient Synthesis of 2,4-Dihydroimidazo[4,5-b]quinoxalines, 3H-Imidazo[1,2-b]pyrazoles and 5H-Imidazo[2,1-c][1,2,4]triazoles

✍ Scribed by Peter Langer; Jörg Wuckelt; Manfred Döring; Peter R. Schreiner; Helmar Görls

Publisher: John Wiley and Sons
Year: 2001
Tongue: English
Weight: 380 KB
Volume: 2001
Category: Article
ISSN: 1434-193X
DOI: 10.1002/1099-0690(200106)2001:12<2257::aid-ejoc2257>3.0.co;2-z

No coin nor oath required. For personal study only.

✦ Synopsis

and 3-aminopyrazole and 3-amino-1,2,4-triazole provide convenient access to biologically relevant 3H-imidazo[1,2-b]pyrazoles and a 5H-imidazo[2,1-c][1,2,4]triazole.

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