hydrogen; sulfided platinum on carbon in hydrogenchloride; ethanol T=50°C; P=760 Torr; 15 h;

trifluorormethanesulfonic acid in dichloromethane T=0°C; 0.333333 h; Inert atmosphere;

1: nitromethane With potassium tert-butylate in dimethyl sulfoxide T=10°C; 0.166667 h; 2: 1-(benzotriazol-1-yl)-3-methylbutan-1-one in dimethyl sulfoxide T=10 - 20°C; 8 h;