1: 2,6-dibromohex-1-ene With magnesium; ethylene dibromide in tetrahydrofuran T=20 - 30°C; 4 h; 2: methyl(3-bromopropyl)dichlorosilane in tetrahydrofuran 1.4 h; Heating;

1: 2,6-dibromohex-1-ene With magnesium; ethylene dibromide in tetrahydrofuran T=10 - 20°C; 4 h; 2: (3-bromopropyl)difluoromethylsilane in tetrahydrofuran 1.4 h; Heating;