1: With lithium aluminium tetrahydride in tetrahydrofuran; diethyl ether T=20°C; 16 h; Inert atmosphere; 2: With Glauber's salt in tetrahydrofuran; diethyl ether T=70°C; 1 h;

1: 1-bromo-4-(trifluoromethoxy)benzene With n-butyllithium in diethyl ether; hexane T=-75°C; 0.75 h; 2: oxirane in diethyl ether; hexane T=-75°C; Further stages.;

1.1: hydrogenchloride / water; acetone 1.2: 0.02 h / Sonication 2.1: sodium tetrahydroborate / ethanol; dichloromethane / 1 h / 20 °C View Scheme