Triazolopyridines. 17. N2-dicyanomethylides: Synthesis, structure and reactivity with acetylenic dipolarophiles
作者:Belén Abarca、Rafael Ballesteros、Ana Muñoz、Gurnos Jones
DOI:10.1016/0040-4020(96)00572-8
日期:1996.7
Preparation and structure of 1,2,3-triazolo[1,5-a]pyridinium N2-dicyanomethylides 7a,b are described. Reaction with methyl propiolate gives trisubstituted indolizines 8a,b in good yield. Reaction of 7b with dimethyl acetylenedicarboxylate gives a quinolizine 12.