1: phenyl-magnesium bromide With ZnI2(tmeda) in tetrahydrofuran 2: (4'-Oxapentan-2'-yl) toluene-p-sulfonate With anhydrous iron chloride in tetrahydrofuran T=0 - 40°C;

1: phenyl-magnesium bromide With ZnI2(tmeda) in tetrahydrofuran 2: (4'-Oxapentan-2'-yl) toluene-p-sulfonate With anhydrous iron chloride in tetrahydrofuran T=0 - 40°C;