1: 6-heptenyl bromide With magnesium in tetrahydrofuran 0.5 h; Inert atmosphereSchlenk techniqueReflux; 2: methyllithium With copper(l) iodide in tetrahydrofuran; diethyl ether T=-78 - 0°C; Inert atmosphereSchlenk technique; 3: I(CH2)10COOMe in tetrahydrofuran; diethyl ether T=-78 - 20°C; 3 h; Inert atmosphereSchlenk technique;

1: 6-heptenyl bromide With magnesium in tetrahydrofuran 2: With copper(l) iodide; methyllithium in tetrahydrofuran; diethyl ether T=-78 - 10°C; 3: I(CH2)10COOMe in tetrahydrofuran; diethyl ether T=-78 - 20°C; Further stages.;

sodium methylate in methanol T=40 - 45°C; electrolysis: Pt electrodes, 200 mA/cm2;

1: 67 percent / HBr, azoisobutyronitrile / light petroleum / 0.5 h / Irradiation 2: 75 percent / NaI / acetone / 16 h / Heating 3: 95 percent / 4 h / Ambient temperature View Scheme

1: 75 percent / NaI / acetone / 16 h / Heating 2: 95 percent / 4 h / Ambient temperature View Scheme

1: 95 percent / 4 h / Ambient temperature View Scheme

Yield given. Multistep reaction;