ol8b03841_si_001.pdf (4.17 MB)
Ni-Catalyzed Defluorination for the Synthesis of gem-Difluoro-1,3-dienes and Their [4 + 2] Cycloaddition Reaction
journal contribution
posted on 2019-01-11, 20:03 authored by Minqi Zhou, Jian Zhang, Xing-Guo Zhang, Xingang ZhangA nickel-catalyzed defluorination
of α-trifluoromethylated
allyl/propargyl carbonates using bis(pinacolato)diboron (B2pin2) as a reactant is described. The reaction proceeds
under relatively mild reaction conditions, providing conjugated gem-difluoroalkenes in moderate to good yields. Applications
of the resulting 1,1-difluoro-1,3-dienes by [4 + 2] cycloaddition
reactions with maleimide led to cyclic fluorinated products efficiently.