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Li, Jie; Knochel, Paul (2018): Cobalt-Catalyzed Cross-Couplings between Alkenyl Acetates and Aryl or Alkenyl Zinc Pivalates. In: Angewandte Chemie-International Edition, Vol. 57, No. 35: pp. 11436-11440
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Abstract

CoBr2 (5mol%) in the presence of 2,2-bipyridyl (5 mol%) enables electrophilic alkenylations between easily accessible alkenyl acetates or tosylates and various functionalized aryl zinc pivalates at ambient temperature. This cobalt-catalyzed process was further applicable to alkenyl zinc pivalates to provide substituted 1,3-dienes.