
Tetrahedron Letters p. 369 - 372 (1990)
Update date:2022-08-05
Topics:
Kataoka
Miyai
Tezuka
Takai
Oshima
Utimoto
Tantalum (or niobium)-alkyne complexes are produced by treatment of acetylenes with the low-valent tantalum (niobium) derived by zinc reduction of TaCl5 (NbCl5). Substituted 1-naphthols are prepared regioselectively by reaction of o-phthalaldehyde with the tantalum (or niobium)-alkyne complexes in good to excellent yield.
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