K. Matsumoto et al., 1,3-DIPOLAR CYCLOADDITION REACTIONS OF CYCLOOCTYNE WITH AZOMETHINE YLIDES, Journal of heterocyclic chemistry, 32(1), 1995, pp. 367-369
Cyclooctyne smoothly underwent 1,3-dipolar cycloaddition with aziridin
es and pyridinium ylides to afford the corresponding pyrroles and indo
lizines in moderate to good yields.