3-chloro-benzenecarboperoxoic acid in dichloromethane T=0°C; 1 h;

N,N,N',N,-tetramethylethylenediamine; sec.-butyllithium 1.) THF, 1 h, -75 deg C then 2 h, -25 deg C; 2.) THF; Yield given. Multistep reaction;

tetra-n-butylammonium tetrafluoroborate; [Ni(2,2'-bipyridine)3(2+)][BF4(1-)]2 in N,N-dimethyl-formamide Ambient temperatureelectrolysis: Mg rod anode, carbon fibre cathode, const. current 60 mA;