Palladium(II) catalyzed cyclization of a
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Claude Lambert; Kiitiro Utimoto; Hitosi Nozaki
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Article
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1984
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Elsevier Science
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French
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Under the catalytic action of palladium(II) in the presente of triethylamine, 3-, 4-, and 5-alkynoic acids afford 3-buten-4-olides, 4-penten-4-olides, and 5-hexen-5-olide, respectively, in good to excellent yields.