1: 1-bromo-octane With magnesium in diethyl ether Metallation; 2: thien-3-yl bromide With [1,3-bis(diphenylphosphino) propane] dichloronickel(II) in diethyl ether Alkylation; 24 h; Heating; Further stages.;
trimethylsilyl trifluoromethanesulfonate; bis-[(trifluoroacetoxy)iodo]benzene in dichloromethane T=-78°C; Title compound not separated from byproducts;