1: n-amyl iodide With chloro-trimethyl-silane; ethylene dibromide; zinc in tetrahydrofuran T=35 - 40°C; Metallation; 12 h; 2: With copper diacetate; lithium chloride in tetrahydrofuran T=-18°C; transmetalation; 0.166667 h; 3: cyclohexenon With chloro-trimethyl-silane in tetrahydrofuran; diethyl ether T=-18 - -10°C; Addition; 1 h;

1-methyl-pyrrolidin-2-one; chloro-trimethyl-silane in tetrahydrofuran T=-30°C; 1 h;

lithium iodide in various solvent(s) T=-78°C; 1 h;

bis(acetylacetonate)nickel(II); chloro-trimethyl-silane; triethylamine in tetrahydrofuran; acetonitrile T=20°C; 12 h;

in diethyl ether; hexane T=-70°C; 3 h;

Ni(salen); 2,3,5-trimethylfurolt;2,3-egt;pyranolt;2,3-bgt;pyridin-7-one in N,N-dimethyl-formamide electrochemical reduction; Product distribution;