1. A preliminary account of this work was presented at the Third International Congress of Heterocyclic Chemistry in Sendai, Japan, September, 1971.
2. I. Lalezari, A. Shafiee, and M. Yalpani, Tetrahedron Letters, 5105 (1969) and
3. J. Org. Chem., 36, 2836 (1971).
4. Einfache neue Synthese von Arylalkinen
5. While our manuscript was in preparation, we noticed that the synthesis of cyclooctyne using our method was published by H. Meier and I. Menzel, Chem. Commun., 1059 (1971).