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Peter Langer, Jörg Wuckelt, Manfred Döring, Peter R. Schreiner, Helmar Görls
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 // European Journal of Organic Chemistry 2001, Volume 2001 Issue 12, Pages 2257 - 2263
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http:/dx.doi.org/10.1002/1099-0690(200106)2001:12<2257::AID-EJOC2257>3.0.CO;2-Z
