Favorskii reaction

The Favorskii reaction is an organic chemistry reaction between an alkyne and a carbonyl group, under basic conditions. The reaction was discovered in the early 1900s by the Russian chemist Alexei Yevgrafovich Favorskii.

When the carbonyl is an aldehyde (R"=H), a rearrangement can occur to generate enone, although the secondary propargylic alcohol can be isolated in some cases. When this rearrangement is catalyzed by an acid, it is called Meyer–Schuster rearrangement. When the base is sodium metal the reaction is called Nef synthesis.

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