lt;Ni(N,N'-bislt;2-(4,5-dihydrooxazol-2-yl)phenylgt;piperdine)gt;lt;BF4gt;; tetra-n-butylammonium tetrafluoroborate in N,N-dimethyl-formamide T=20°C; electrolysis, Mg anode, carbon fibre cathode;

1: carbon dioxide; allyl 2-bromobenzyl ether With tetra-n-butylammonium tetrafluoroborate; Ni(cyclam)Br2 in N,N-dimethyl-formamide T=20°C; Carboxylation; cyclization; P=760 Torr; ElectrolysisMg/C electrodes; 2: methyl iodide With potassium carbonate T=50°C; Esterification; 10 h;

sodium hydride in tetrahydrofuran 4 h; Ambient temperature;

sodium 2 h; Heating;

potassium carbonate in N,N-dimethyl-formamide Etherification;