2-(4-chlorophenyl)sulfonylacetonitrile

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 4-chlorophenylsulfonylacetonitrile (1.0 g, 4.64 mmol) in dry acetone (10 ml) was stirred while dry potassium carbonate (1.28 g, 9.28 mmol) and 3-cyanophenyl isothiocyanate (0.78 g, 4.87 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 20 h. Excess of potassium carbonate was filtered off, methyl iodide (0.859 ml, 13.9 mmol) was added to the filtrate, and stirring was continued for 3 h. The mixture was evaporated and the residue was dissolved in dichloromethane and extracted with water and brine. The organic phase was dried over magnesium sulphate, filtered and evaporated to afford 1.74 g (96%) of the title compound as golden brown crystals. Mp 168-170° C. 1H NMR (200 MHz, CDCl3): δ=2.22 (s, 3H), 7.50-7.68 (m, 6H), 7.84-7.93(m, 2H), 9.89 (br s, 1H). were added Excess of potassium carbonate was filtered off stirring was continued for 3 h The mixture was evaporated the residue was dissolved in dichloromethane extracted with water and brine The organic phase was dried over magnesium sulphate filtered evaporated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 4-chlorophenylsulfonylacetonitrile (1.0 g, 4.64 mmol) in dry acetone (10 ml) was stirred while dry potassium carbonate (1.28 g, 9.28 mmol) and 3-cyanophenyl isothiocyanate (0.78 g, 4.87 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 20 h. Excess of potassium carbonate was filtered off, methyl iodide (0.859 ml, 13.9 mmol) was added to the filtrate, and stirring was continued for 3 h. The mixture was evaporated and the residue was dissolved in dichloromethane and extracted with water and brine. The organic phase was dried over magnesium sulphate, filtered and evaporated to afford 1.74 g (96%) of the title compound as golden brown crystals. Mp 168-170° C. 1H NMR (200 MHz, CDCl3): δ=2.22 (s, 3H), 7.50-7.68 (m, 6H), 7.84-7.93(m, 2H), 9.89 (br s, 1H). were added Excess of potassium carbonate was filtered off stirring was continued for 3 h The mixture was evaporated the residue was dissolved in dichloromethane extracted with water and brine The organic phase was dried over magnesium sulphate filtered evaporated

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chlorophenylsulfonylacetonitrile (1.00 g, 4.64 mmol) in dry acetone (10 ml) first dry potassium carbonate (1.28 g, 9.3 mmol) and then 3,4-methylenedioxyphenyl isothiocyanate (0.87 g, 4.9 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 4 h, and then filtered. To the filtrate methyl iodide (0.86 ml, 13.9 mmol) was added. The mixture was stirred at room temperature for 50 min. Then pH was adjusted to 1 with 1N aqueous HCl. The precipitate was filtered off and washed with water to give 1.12 g (59%) of the title compound. Mp 196-200° C. (decomp.); 1H NMR (200 MHz, CDCl3): δ=2.22 (s, 3H), 6.05 (s, 2H), 6.68 (m, 2H), 6.80 (d, 1H), 7.53 (d, 2H), 7.87 (d, 2H), 9.80 (br s, 1H); EI SP/MS: 408 (M+). filtered The mixture was stirred at room temperature for 50 min The precipitate was filtered off washed with water

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chlorophenylsulfonylacetonitrile (1.00 g, 4.64 mmol) in dry acetone (10 ml) first dry potassium carbonate (1.28 g, 9.3 mmol) and then 3,4-methylenedioxyphenyl isothiocyanate (0.87 g, 4.9 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 4 h, and then filtered. To the filtrate methyl iodide (0.86 ml, 13.9 mmol) was added. The mixture was stirred at room temperature for 50 min. Then pH was adjusted to 1 with 1N aqueous HCl. The precipitate was filtered off and washed with water to give 1.12 g (59%) of the title compound. Mp 196-200° C. (decomp.); 1H NMR (200 MHz, CDCl3): δ=2.22 (s, 3H), 6.05 (s, 2H), 6.68 (m, 2H), 6.80 (d, 1H), 7.53 (d, 2H), 7.87 (d, 2H), 9.80 (br s, 1H); EI SP/MS: 408 (M+). filtered The mixture was stirred at room temperature for 50 min The precipitate was filtered off washed with water

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chlorophenylsulfonylacetonitrile (1.00 g, 4.6 mmol) in dry acetone (10 ml) first dry potassium carbonate (1.28 g, 9.3 mmol) and then 3,5-dimethoxyphenyl isothiocyanate (0.96 g, 4.9 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 2 h 15 min and then filtered. To the filtrate methyl iodide (0.86 ml, 13.9 mmol) was added. The mixture was stirred at room temperature for 4 h. The reaction mixture was concentrated. The residue was dissolved in DCM, washed with water, dried (Na2SO4) and concentrated. The residue was crystallised from ethyl acetate/heptane 1:2 to give 1.27 g (65%) of the title compound. Mp 119.5-123° C.; 1H NMR (200 MHz, CDCl3): δ=2.29 (s, 3H), 3.80 (s, 6H), 3.36 (m, 3H), 7.53 (d, 2H), 7.87 (d, 2H), 9.82 (br s, 1H); EI SP/MS: 424 (M+). filtered The mixture was stirred at room temperature for 4 h The reaction mixture was concentrated The residue was dissolved in DCM washed with water dried (Na2SO4) concentrated The residue was crystallised from ethyl acetate/heptane 1:2

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chlorophenylsulfonylacetonitrile (1.00 g, 4.6 mmol) in dry acetone (10 ml) first dry potassium carbonate (1.28 g, 9.3 mmol) and then 3,5-dimethoxyphenyl isothiocyanate (0.96 g, 4.9 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 2 h 15 min and then filtered. To the filtrate methyl iodide (0.86 ml, 13.9 mmol) was added. The mixture was stirred at room temperature for 4 h. The reaction mixture was concentrated. The residue was dissolved in DCM, washed with water, dried (Na2SO4) and concentrated. The residue was crystallised from ethyl acetate/heptane 1:2 to give 1.27 g (65%) of the title compound. Mp 119.5-123° C.; 1H NMR (200 MHz, CDCl3): δ=2.29 (s, 3H), 3.80 (s, 6H), 3.36 (m, 3H), 7.53 (d, 2H), 7.87 (d, 2H), 9.82 (br s, 1H); EI SP/MS: 424 (M+). filtered The mixture was stirred at room temperature for 4 h The reaction mixture was concentrated The residue was dissolved in DCM washed with water dried (Na2SO4) concentrated The residue was crystallised from ethyl acetate/heptane 1:2

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chlorophenylsulfonylacetonitrile (1.00 g, 4.64 mmol) in dry acetone (10 ml) first dry potassium carbonate (1.28 g, 9.3 mmol) and then 3,4-methylenedioxyphenyl isothiocyanate (0.87 g, 4.9 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 4 h, and then filtered. To the filtrate methyl iodide (0.86 ml, 13.9 mmol) was added. The mixture was stirred at room temperature for 50 min. Then pH was adjusted to 1 with 1N aqueous HCl. The precipitate was filtered off and washed with water to give 1.12 g (59%) of the title compound. Mp 196-200° C. 1H NMR (200 MHz, CDCl3): δ=2.22 (s, 3H), 6.05 (s, 2H), 6.68 (m, 2H), 6.80 (d, 1H), 7.53 (d, 2H), 7.87 (d, 2H), 9.80 (br s, 1H); EI SP/MS: 408 (M+). filtered The mixture was stirred at room temperature for 50 min The precipitate was filtered off washed with water

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chlorophenylsulfonylacetonitrile (1.00 g, 4.64 mmol) in dry acetone (10 ml) first dry potassium carbonate (1.28 g, 9.3 mmol) and then 3,4-methylenedioxyphenyl isothiocyanate (0.87 g, 4.9 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 4 h, and then filtered. To the filtrate methyl iodide (0.86 ml, 13.9 mmol) was added. The mixture was stirred at room temperature for 50 min. Then pH was adjusted to 1 with 1N aqueous HCl. The precipitate was filtered off and washed with water to give 1.12 g (59%) of the title compound. Mp 196-200° C. 1H NMR (200 MHz, CDCl3): δ=2.22 (s, 3H), 6.05 (s, 2H), 6.68 (m, 2H), 6.80 (d, 1H), 7.53 (d, 2H), 7.87 (d, 2H), 9.80 (br s, 1H); EI SP/MS: 408 (M+). filtered The mixture was stirred at room temperature for 50 min The precipitate was filtered off washed with water

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chlorophenylsulfonylacetonitrile (1.00 g, 4.6 mmol) in dry acetone (10 ml) first dry potassium carbonate (1.28 g, 9.3 mmol) and then 3,5-dichlorophenyl isothiocyanate (0.99 g, 4.9 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 4 h, and then filtered. To the filtrate methyl iodide (0.86 ml, 13.9 mmol) was added. The mixture was stirred at room temperature for 45 min. Then pH was adjusted to 1 with 1N aqueous HCl. The precipitate was filtered off and washed with water to give 1.86 g (93%) of a crude product. Recrystallisation from ethyl acetate/heptane (1:1) gave 1.42 g (72%) of the title compound contaminated with 4-chlorophenylsulfonylacetonitrile. Mp 128-131° C. 1H NMR (200 MHz, CDCl3): δ=2.25 (s, 3H), 7.20 (d, 2H), 7.30 (t, 1H), 7.55 (d, 2H), 7.85 (d, 2H), 9.80 (br s, 1H); EI SP/MS: 434 (M+), 436 (M+2). filtered The mixture was stirred at room temperature for 45 min The precipitate was filtered off washed with water to give 1.86 g (93%) of a crude product Recrystallisation from ethyl acetate/heptane (1:1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chlorophenylsulfonylacetonitrile (1.00 g, 4.6 mmol) in dry acetone (10 ml) first dry potassium carbonate (1.28 g, 9.3 mmol) and then 3,5-dichlorophenyl isothiocyanate (0.99 g, 4.9 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 4 h, and then filtered. To the filtrate methyl iodide (0.86 ml, 13.9 mmol) was added. The mixture was stirred at room temperature for 45 min. Then pH was adjusted to 1 with 1N aqueous HCl. The precipitate was filtered off and washed with water to give 1.86 g (93%) of a crude product. Recrystallisation from ethyl acetate/heptane (1:1) gave 1.42 g (72%) of the title compound contaminated with 4-chlorophenylsulfonylacetonitrile. Mp 128-131° C. 1H NMR (200 MHz, CDCl3): δ=2.25 (s, 3H), 7.20 (d, 2H), 7.30 (t, 1H), 7.55 (d, 2H), 7.85 (d, 2H), 9.80 (br s, 1H); EI SP/MS: 434 (M+), 436 (M+2). filtered The mixture was stirred at room temperature for 45 min The precipitate was filtered off washed with water to give 1.86 g (93%) of a crude product Recrystallisation from ethyl acetate/heptane (1:1)

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chlorophenylsulfonylacetonitrile (1.00 g, 4.6 mmol) in dry acetone (10 ml) first dry potassium carbonate (1.28 g, 9.3 mmol) and then pyridin-3-yl isothiocyanate (0.663 g, 4.9 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 4 h, and then filtered. To the filtrate methyl iodide (0.315 ml, 5.1 mmol) was added. The mixture was stirred at room temperature for 16 h. The reaction mixture was concentrated and the residue was taken up into ethyl acetate and water. The organic layer was washed with 1N aqueous HCl (2×). The organic phase was dried (sodium sulfate) and concentrated. The residue was purified by flash chromatography using heptane/ethyl acetate 1:2 as eluent and recrystallisation in ethyl acetate to give 294 mg (16%) of the title compound. Mp 181-182° C. 1H NMR (300 MHz, CDCl3): δ=2.20 (s, 3H), 7.36 (dd, 1H), 7.54 (dm, 2H), 7.6 (m, 1H), 7.88 (dm, 2H), 8.55 (m, 2H), 9.85 (br s, 1H); EI SP/MS: 365 (M+). filtered The mixture was stirred at room temperature for 16 h The reaction mixture was concentrated The organic layer was washed with 1N aqueous HCl (2×) The organic phase was dried (sodium sulfate) concentrated The residue was purified by flash chromatography recrystallisation in ethyl acetate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of 4-chlorophenylsulfonylacetonitrile (1.00 g, 4.6 mmol) in dry acetone (10 ml) first dry potassium carbonate (1.28 g, 9.3 mmol) and then pyridin-3-yl isothiocyanate (0.663 g, 4.9 mmol) were added. The resulting mixture was stirred at room temperature under nitrogen for 4 h, and then filtered. To the filtrate methyl iodide (0.315 ml, 5.1 mmol) was added. The mixture was stirred at room temperature for 16 h. The reaction mixture was concentrated and the residue was taken up into ethyl acetate and water. The organic layer was washed with 1N aqueous HCl (2×). The organic phase was dried (sodium sulfate) and concentrated. The residue was purified by flash chromatography using heptane/ethyl acetate 1:2 as eluent and recrystallisation in ethyl acetate to give 294 mg (16%) of the title compound. Mp 181-182° C. 1H NMR (300 MHz, CDCl3): δ=2.20 (s, 3H), 7.36 (dd, 1H), 7.54 (dm, 2H), 7.6 (m, 1H), 7.88 (dm, 2H), 8.55 (m, 2H), 9.85 (br s, 1H); EI SP/MS: 365 (M+). filtered The mixture was stirred at room temperature for 16 h The reaction mixture was concentrated The organic layer was washed with 1N aqueous HCl (2×) The organic phase was dried (sodium sulfate) concentrated The residue was purified by flash chromatography recrystallisation in ethyl acetate