Abstract
A gem of a couple: The title reaction of terminal alkynes with O and N nucleophiles proceeds in the presence of [{Rh(cod)Cl}2], P(4-FC6H4)3, and 4-picoline N-oxide. Alcohols, amines, and water add to the terminal alkynes to give esters, amides, and carboxylic acids, respectively. The reaction involves formation of a rhodium vinylidene, oxidation to a ketene by oxygen transfer, and nucleophilic addition.
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