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Three-Component and Nonclassical Reaction of Phosphines with Enynes and Aldehydes: Formation of γ-Lactones Featuring α-Phosphorus Ylides

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posted on 06.05.2011, 00:00 by Jie-Cheng Deng, Shih-Ching Chuang
Inverted carbenoid species, generated from attack of phosphines at the α(δ′)-carbon of hex-2-en-4-ynedioic acid dialkyl esters, react with aldehydes to give γ-lactones possessing an α-phosphorus ylide moiety.

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