反应详情

To [5-(4-fluoro-phenyl)-2-(3-methoxy-2-triisopropylsilanyloxy-phenyl)-[1,3,4]thiadiazol-3-yl]-(2,4,6-trifluoro-phenyl)-methanone (32.3 μmol) is added tetrabutylammonium fluoride in tetrahydrofuran (1 M) (48.5 μmol). The mixture is stirred for an hour and 2-bromo-acetamide (48.5 μmol) is added. The mixture is stirred at room temperature for 12 hours. After evaporation of the solvent the residue is purified by preparative LC/MS (20-100% MeCN/H2O) to give 2-{2-[5-(4-fluoro-phenyl)-3-(2,4,6-trifluoro-benzoyl)-2,3-dihydro-[1,3,4]thiadiazol-2-yl]-6-methoxy-phenoxy}-acetamide: 1H NMR (400 MHz, CDCl3): δ 7.63-7.62 (m, 2H), 7.57 (s, 1H), 7.22-7.12 (m, 3H), 7.02 (dd, J1=8.4 Hz, J2=2 Hz, 2H), 6.9 (bs, 1H), 6.85 (t, J=8.4 Hz, 2H), 6.10 (s, 1H), 4.83 (d, J=15.2 Hz, 1H), 4.68 (d, J=15.2 Hz, 1H), 3.94 (s, 3H).

1. stirringThe mixture is stirred at room temperature for 12 hours
2. customAfter evaporation of the solvent the residue
3. customis purified by preparative LC/MS (20-100% MeCN/H2O)