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- W2019993366 abstract "Cobalt complex/Zn systems effectively catalyze the reductive coupling of activated alkenes with alkynes in the presence of water to give substituted alkenes with very high regio- and stereoselectivity in excellent yields. While the intermolecular reaction of acrylates, acrylonitriles, and vinyl sulfones with alkynes takes place in the presence of CoI2(PPh3)2/Zn, the reaction of enones and enals with alkynes requires the use of the CoI2(dppe)/Zn/ZnI2 system. The intramolecular reductive coupling of activated alkenes (enones, enals, acrylates, and acrylonitriles) with alkynes also works efficiently. Further a variety of cyclic lactones and lactams were prepared using this methodology. Possible mechanistic pathways are proposed based on a deuterium-labeling experiment carried out in the presence of D2O." @default.
- W2019993366 created "2016-06-24" @default.
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- W2019993366 date "2007-09-11" @default.
- W2019993366 modified "2023-10-02" @default.
- W2019993366 title "Cobalt-Catalyzed Reductive Coupling of Activated Alkenes with Alkynes" @default.
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- W2019993366 doi "https://doi.org/10.1021/ja073604c" @default.
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