in acetonitrile Electrochem. Process; (1:1:1 molar ratio), acac, KPF6, and bpzz, copper anode (20V, 20 mA for 1 h); filtered, crystd on storage ar 0°c for 2 wk, washed (CHCl3) to remoce Cu(acac)2, dried (vac.), elem. anal.;

palladium on activated charcoal; 1,3,5-trimethyl-benzene

1: ethanol 2: palladium/charcoal; mesitylene View Scheme