名称:
Nickel-Catalyzed Addition-Type Alkenylation of Unactivated, Aliphatic C–H Bonds with Alkynes: A Concise Route to Polysubstituted γ-Butyrolactones
摘要:
Through the nickel-catalyzed chelation-assisted C-H bond activation strategy, the addition-type -allcenylation of unreactive beta-C(sp(3))-H bonds of aliphatic amides with internal alkynes is developed for the first time to produce gamma/delta-unsaturated carboxylic amide derivatives. The resulting alkenylated products can further be transformed into polysubstituted gamma-butyrolactones with pyridinium chlorochromate (PCC).
DOI:
10.1021/acs.orglett.5b01128