3-苄基-1-甲基-2-亚硫基咪唑啉-4-one

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a mixture of intermediate 3-benzyl-1-methyl-2-thioxoimidazolidin-4-one (0.33 g, 1.5 mmol) and 3-methyl-2-methylthiobenzothiazol-3-ium p-toluenesulfonate 0.66 g, 1.8 mmol) in anhydrous MeCN (10 mL) added dropwise TEA (0.28 mL, 2.0 mmol). After 2 h the resulting product mixture was concentrated and chromatographed (silica gel, DCM) to afford the title compound (0.47 g, 85%) as an orange-yellow solid. 1H-NMR (CDCl3): δ 7.54-7.61 (3H, m), 7.46 (1H, m), 7.21-7.33 (5H, m), 5.19 (2H; s), 3.86 (3H, s), 3.77 (3H, s). After 2 h the resulting product mixture was concentrated chromatographed (silica gel, DCM)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of sarcosine methyl ester hydrochloride (0.56 g, 4.0 mmol) and DBU (0.60 mL, 4.0 mmol) in anhydrous ethanol added benzyl isothiocyanate (0.53 mL, 4.0 mmol). The resulting solution was heated at reflux 16 h, cooled, concentrated and chromatographed (silica gel, DCM) to give the title compound (0.88 g, quant.). 1H-NMR (CDCl3): δ 7.49-7.53 (2H, m), 7.28-7.35 (3H, m), 5.02 (2H, s), 4.03 (2H, s), 3.34 (3H, s). The resulting solution was heated at reflux 16 h cooled concentrated chromatographed (silica gel, DCM)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a mixture of intermediate 3-benzyl-1-methyl-2-thioxoimidazolidin-4-one (0.33 g, 1.5 mmol) and 3-methyl-2-methylthiobenzothiazol-3-ium p-toluenesulfonate 0.66 g, 1.8 mmol) in anhydrous MeCN (10 mL) added dropwise TEA (0.28 mL, 2.0 mmol). After 2 h the resulting product mixture was concentrated and chromatographed (silica gel, DCM) to afford the title compound (0.47 g, 85%) as an orange-yellow solid. 1H-NMR (CDCl3): δ 7.54–7.61 (3H, m), 7.46 (1H, m), 7.21–7.33 (5H, m), 5.19 (2H, s), 3.86 (3H, s), 3.77 (3H, s). After 2 h the resulting product mixture was concentrated chromatographed (silica gel, DCM)

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: To a solution of sarcosine methyl ester hydrochloride (0.56 g, 4.0 mmol) and DBU (0.60 mL, 4.0 mmol) in anhydrous ethanol added benzyl isothiocyanate (0.53 mL, 4.0 mmol). The resulting solution was heated at reflux 16 h, cooled, concentrated and chromatographed (silica gel, DCM) to give the title compound (0.88 g, quant.). 1H-NMR (CDCl3): δ 7.49–7.53 (2H, m), 7.28–7.35 (3H, m), 5.02 (2H, s), 4.03 (2H, s), 3.34 (3H, s). The resulting solution was heated at reflux 16 h cooled concentrated chromatographed (silica gel, DCM)