The regioselective palladium-catalyzed formate reduction of allylic acetates in five- to eight-membered heterocycles is reported. Reduction of allylic acetates under mild conditions using allylpalladium chloride dimer, phosphines, and formic acid/triethylamine in DMF gives the exo-cyclic olefins in good regioselectivities and high yields. Synthetic application in preparing N-tosyl-3-oxo-piperidine is also reported.
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| http://dx.doi.org/10.1021/jo0624896 | DOI Listing |
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