Diisopropylethylamine → (S,R) 1-Morpholin-2-yl-1-phenyl-2-(2-trifluoromethylsulfanyl-phenyl)-ethanol acetate

To a solution of 1-(4-benzyl-morpholin-2-yl)-1-phenyl-2-(2-trifluoromethylsulfanyl-phenyl)-ethanol (218 mg g, 1 equiv.) and solid supported Hunig's base (available from Argonaut, 1 g, 5 equiv.) in dry tetrahydrofuran (4 mL) at 0° C. under nitrogen atmosphere was added ACE-Cl (502 μL, 10 equiv.). The reaction mixture was left to warm to room temperature for 48 hours. All volatiles were evaporated under vacuum, and the resulting solid was taken-up with methanol (50 mL) and stirred at room temperature overnight. The solution was filtered through acid ion exchange column and the required fractions evaporated to dryness. The resulting solid was purified via preparative HPLC to give 62 mg of the title compound as a colourless oil. 1H NMR (300 MHz, CDCl3) δ: 2.01 (s, 3H), 2.43-2.47 (m, 1H), 2.63-2.70 (m, 1H), 2.81-2.94 (m, 2H), 3.24 (d, 1H, J=13.57 Hz), 3.85-3.96 (m, 2H), 4.01-4.05 (m, 1H), 4.09-4.13 (m, 1H), 4.45 (bs, 4H), 6.90-6.93 (m, 1H), 7.13-7.26 (m, 7H), 7.55-7.58 (m, 1H) ppm. LCMS (12 minute method) [M+H]+=384 @ Rt 5.13 min. single peak.