1) Synthesis of Mono- and Disubstituted 1H-Imidazo [1,2-B] Pyrazoles.
P. Seneci ab; M. Nicola ac; M. Inglesi ac; E. Vanotti a; G. Resnati ad
Synthetic Communications, Volume 29, Issue 2 January 1999 , pages 311 - 341
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http://dx.doi.org//10.1080/00397919908085772Christopher M. Paska, Kenneth D. Camma, Colin A. Kilnera and Malcolm A. Halcrow
Tetrahedron Letters, Volume 47, Issue 15, 10 April 2006, Pages 2531-2534
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http://dx.doi.org/10.1016/j.tetlet.2006.02.053