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- W2949427408 abstract "Treatment of α,α,γ-trichlorinated γ-lactams with a catalytic amount of CuCl(bipyridine) complex resulted in facile activation of their carbon-chlorine bond at the α-position. Addition of the carbon moiety and the chlorine atom to olefins furnished the carbon-carbon bond forming reaction at the α-position of the carbonyl group. In certain trichlorinated γ-lactams including a carbon-carbon double bond at an appropriate position, intramolecular addition reactions took place to give bicyclic lactams. Sequential reactions consisting of the cyclization of N-allyl trichloroacetamides followed by the inter- or intramolecular carbon-carbon bond forming reactions at the α-position of the lactams were also achieved. Efficiency of the catalyst and reaction rate was dependent on the protecting group of the nitrogen atom of the γ-lactams; N-tosyl derivatives gave better results than the corresponding N-benzyl homologues. The molecular structure of the representative products revealed the stereochemical outcome of the reactions." @default.
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- W2949427408 date "1999-02-01" @default.
- W2949427408 modified "2023-10-16" @default.
- W2949427408 title "Copper-catalyzed facile carbon-carbon bond forming reactions at the α-position of α,α,γ-trichlorinated γ-lactams" @default.
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- W2949427408 doi "https://doi.org/10.1016/s0040-4020(98)01198-3" @default.
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