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Short Paper | Regular issue | Vol 92, No. 8, 2016, pp.1490-1496
Published online, 9th June, 2016
DOI: 10.3987/COM-16-13498
Intramolecular 1,3-Dipolar Cycloaddition of Diazido-terminal Dialkynes: Synthesis of New Polyoxyethylene Fused exo-Bis(1,2,3-triazolo-1,4-oxazines)

Nejib Hussein Mekni*

*Organic Structural Chemistry Laboratory, Synthesis and Physico-Chemical Studies, Department of Chemistry, University of Tunis El-Manar, 2092 Tunis, Tunisia


The synthesis of new tetraheterocyclic 1,5-disubstituted exo-heterocyclic polyoxyethylene bis(1,2,3-triazolo-1,4-oxazine) is achieved through nucleophilic azide ion ring opening reaction on polyoxyethylene dioxiranes, followed by an O-propargylation, then thermal uncatalyzed 1,3-dipolar intramolecular cycloaddition.