... Journal of Heterocyclic Chemistry: Previous article in issue: [4+2] Cycloaddition of α,β-unsaturated acid anhydrides to 2-furylpiperidin-4 ... J. Heterocyclic Chem., (2010). ... for such reactions, for construction of [1, 2, 3]triazolo[1,5-a]pyrimidines system [6b] with heterocyclic substituents. ...