B. Abarca et al., TRIAZOLOPYRIDINES .17. N2-DICYANOMETHYLIDES - SYNTHESIS, STRUCTURE AND REACTIVITY WITH ACETYLENIC DIPOLAROPHILES, Tetrahedron, 52(31), 1996, pp. 10519-10524
Preparation and structure of 1,2,3-triazolo[1,5-a]pyridinium N2-dicyan
omethylides 7a,b are described. Reaction with methyl propiolate gives
trisubstituted indolizines 8a,b in good yield. Reaction of 7b with dim
ethyl acetylenedicarboxylate gives a quinolizine 12. Copyright (C) 199
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