1: (+/-)-N2-(4-methoxyphenyl)-1,1,1-trifluoro-3-phenylsulfonyl-2-propanamine With n-butyllithium in tetrahydrofuran; hexane T=-78°C; 2 h; 2: chloromethyl iodide in tetrahydrofuran; hexane 0.166667 h; 3: With methyllithium in tetrahydrofuran; hexane Julia methylenation-desulfonylation; 0.25 h;