[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([S:8][CH2:9][CH2:10][NH:11][CH:12]([CH3:14])[CH3:13])=[CH:4][CH:3]=1.B(O[O-])=[O:16].[Na+].[OH-].[Na+]>S(=O)(=O)(O)O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([S:8]([CH2:9][CH2:10][NH:11][CH:12]([CH3:14])[CH3:13])=[O:16])=[CH:6][CH:7]=1A solution of 15.05 g (0.066 mole) of N-[2-[(4-chlorophenyl)thio]ethyl]-1-methylethanamine and 12.0 g (0.0779 mole) of sodium perborate in 400 ml of 1M sulfuric acid was stirred at room temperature for about 18 hr. The solution was made basic with 50% sodium hydroxide and the basic solution was extracted with methylene chloride. The methylene chloride layer was dried with magnesium sulfate and the solvent removed in vacuo to give 14.7 g of solid. Nuclear magnetic resonance analysis showed a 9 to 1 ratio of sulfoxide to sulfide. The solid was recrystallized from ether-hexane to give 12.3 g (76.4%) of the free base title compound as crystalline solid, m.p. 52.5°-53.5° C.
Wird geladen…
