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I This work was supported by the Fonds der Chemischen Industrie. the Deutsche Forschungsgemeinschaft (SFB 247). and the BASF Aktiengesellschaft (Ludwigshafen). J. R. thanks the Studienstiftung des Deutschen Volkes for a Ph.D. grant. We thank Dr. M. Rentzea and Mrs. C. Berndt for FAB' spectrometric measurements. Aiigen Chnir. In/. Ed. EngI. 1995. 34. No. 7 VCH Verlugsgesei/schyfl mbH, 0.69451 Wcrinhein?, 1995 0570-0833/95/0707-078Y 3 iO.OO+ .25/0

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A one‐pot reaction provides good yields of highly functionalized β,γ‐unsaturated ketones of type 1 (n = 1, 2; R = H, Ph, etc.) from the Pd0‐catalyzed coupling of an allyl benzoate, CO, and a β‐ or γ‐zincioester. This transformation of CO into a carbonyl group shows that organozinc compounds still have novel applications in organic synthesis.

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