[S:1]=[C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[CH2:5][C:4](=[O:12])[NH:3]1.[C:13]1([C:19](S)([CH3:21])[CH3:20])[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1.C(O)(C(F)(F)F)=O>C([O-])(O)=O.[Na+]>[C:13]1([C:19]([S:1][C:2]2[C:11]3[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=3)[CH:5]=[C:4]([OH:12])[N:3]=2)([CH3:21])[CH3:20])[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1To a 50 mL round bottom flask was added 1-thioxo-1,4-dihydro-2H-isoquinolin-3-one (250 mg, 1.41 mmol), and 2-phenylpropan-2-thiol (192 mg, 1.41) followed by a solution of TFA (10 mL, 20% v/v in DCM). The reaction mixture was stirred under Ar for 1 h, neutralized with NaHCO3 (100 mL, sat. aq.), and then extracted with EtOAc. The organic phase was washed with brine, dried over Na2SO4, and then the solvent was removed by rotary evaporation to yield a crude residue. The crude residue was purified via silica gel chromatography to provide the title compound as an orange solid (188 mg, 0.636 mmol, 45%). 1H NMR (400 MHz, CDCl3): δ ppm 8.11 (d, J=8.79 Hz, 1H), 7.55 (t, J=7.47 Hz, 3H), 7.42-7.50 (m, 1H), 7.14-7.29 (m, 5H), 6.74 (s, 1H), 1.95 (s, 6H). LC/MS m/z 296 [M+H].
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