caesium carbonate in N,N-dimethyl-formamide

sodium tetrahydroborate; Fe2(ox)3; 1-(chloromethyl)-4-fluoro-1,4-diazoniabicyclo-[2.2.2]octane bis(tetrafluoroborate) in water; acetonitrile T=0°C; Markovnikov addition; 0.533333 h;