Palladium-catalysed cross-coupling of a new umpolung reagent, (α-methoxy-γ-tributylstannyl)allyltrimethyl-silane, with acyl or aryl halides, involves exclusively the vinyl–tin bond and subsequent desilylation with tetrabutylammonium fluoride gives enol ethers, precursors of β-acyl- or β-aryl-propionaldehydes.
J. Verlhac, J. Quintard and M. Pereyre, J. Chem. Soc., Chem. Commun., 1988, 503 DOI: 10.1039/C39880000503
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