Abstract
Heterocyclic alkynes 1-2 were obtained easily in good yield by N-alkylation of carbazole orbenzimidazole with propargyl bromide. The 1,3-dipolar cycloaddition of these alkynes with the 4-azidomethyl-4-methyl-2-phenyloxazoline 3 afford new oxazolinic derivatives 4-5, precursors ofbiheterocyclic aminoalcohols, aminoaldehydes and amino acids.