A remarkable rearrangement during reaction between triazolopyridinium ylides and dimethyl acetylenedicarboxylate
作者:Belen Abarca、Rafael Ballesteros、Mohamed R. Metni、Gurnos Jones、David J. Ando、Michael B. Hursthouse
DOI:10.1016/s0040-4039(00)93512-3
日期:1991.9
The ylides from 2-acylmethyltriazolopyridinium salts (1) react with dimethyl acetylenedicarboxylate in toluene solution to give the 7-pyrroleninylpyrazolo[1,5-a]pyridines (5).