3-chloro-4-fluorobenzenesulfonamide

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: To a solution of 3-chloro-4-fluorobenzenesulfonyl chloride (2.29 g, 10 mmol) in methylene chloride (30 mL) was added 25% ammonium hydroxide (10 mL) at room temperature and the mixture was stirred for 1 hour. The solvent was removed in vacuo. The residue was redissolved in ethyl acetate (50 mL) and the whole washed with water and brine. After dried over MgSO4 and concentration in vacuo. The resulting solid was recrystallized from ether-hexane to give the title compound (1.429 g, 68.2% yield). The solvent was removed in vacuo The residue was redissolved in ethyl acetate (50 mL) the whole washed with water and brine After dried over MgSO4 and concentration in vacuo The resulting solid was recrystallized from ether-hexane

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: To a solution of EXAMPLE 296C (0.175 g) in tetrahydrofuran (5 ml) was added sodium hydride (0.209 g) and the reaction stirred at room temperature for 15 minutes. 3-Chloro-4-fluorobenzenesulfonamide (0.273 g) was added and the reaction stirred for 3 hours. To the thick suspension was added tetrahydrofuran (2 ml) and N,N-dimethylformamide (3 ml). The reaction was stirred for 3 hours at 60° C. then poured into dichloromethane (50 ml) and 1N aqueous HCl (50 ml). The organic layer was washed with brine (35 ml) dried over magnesium sulfate, filtered, and concentrated. Silica gel chromatography (Reveleris 40 g) eluting with a gradient of 10-100% ethyl acetate/hexanes over 30 minutes (flow=40 ml/minute) gave the title compound. the reaction stirred for 3 hours The reaction was stirred for 3 hours at 60° C. The organic layer was washed with brine (35 ml) dried over magnesium sulfate filtered concentrated Silica gel chromatography (Reveleris 40 g) eluting with a gradient of 10-100% ethyl acetate/hexanes over 30 minutes (flow=40 ml/minute)

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

Procedure: A solution of 3-chloro-4-fluorobenzenesulfonamide (1.0 g), tert-butyl 2-(aminomethyl)morpholine-4-carboxylate (1.135 g) and N-ethyl-N-isopropylpropan-2-amine (1.246 mL) in dimethylsulfoxide (15 mL) was stirred at 115° C. for 72 hours. The mixture was concentrated, and the residue was purified on a silica gel column eluting with 60% ethyl acetate to provide the title compound. The mixture was concentrated the residue was purified on a silica gel column eluting with 60% ethyl acetate

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

Procedure: A solution of 3-chloro-4-fluorobenzenesulfonamide (1.0 g), tert-butyl 2-(aminomethyl)morpholine-4-carboxylate (1.135 g) and N-ethyl-N-isopropylpropan-2-amine (1.246 mL) in dimethylsulfoxide (15 mL) was stirred at 115° C. for 72 hours. The mixture was concentrated, and the residue was purified on a silica gel column eluting with 60% ethyl acetate to provide the title compound. The mixture was concentrated the residue was purified on a silica gel column eluting with 60% ethyl acetate

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

Procedure: To a solution of tert-butyl 2-(hydroxymethyl)morpholine-4-carboxylate (0.478 g) in anhydrous N,N-dimethylformamide (5 mL) was added sodium hydride (0.280 g). The mixture was stirred at room temperature for 30 minutes, followed by addition of 3-chloro-4-fluorobenzenesulfonamide (0.419 g). The mixture was stirred at 40° C. overnight. The reaction was quenched with water (10 mL), and the mixture was adjusted to ˜pH 7 and extracted with ethyl acetate. The crude product was purified on a silica gel column eluting with 60% ethyl acetate in hexane to provide the title compound. The mixture was stirred at 40° C. overnight The reaction was quenched with water (10 mL) extracted with ethyl acetate The crude product was purified on a silica gel column eluting with 60% ethyl acetate in hexane

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

Procedure: (Trans-4-(tert-butyldimethylsilyloxy)cyclohexyl)methanol (275 mg, prepared according to a procedures in WO 2008/124878) and 3-chloro-4-fluorobenzenesulfonamide (259 mg) in tetrahydrofuran (15 mL) were treated with sodium hydride (180 mg, 60%) overnight. The reaction was quenched with water (1 mL) and trifluoroacetic acid (4 mL) was added. The resulting mixture was stirred for 1 hour and concentrated. The residue was triturated with water and methanol to provide the title compound. The reaction was quenched with water (1 mL) and trifluoroacetic acid (4 mL) was added concentrated The residue was triturated with water and methanol

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

Procedure: To a solution of (4-fluoro-1-methylpiperidin-4-yl)methanol (0.265 g) in tetrahydrofuran (2 mL) was added sodium hydride (0.288 g). After 15 minutes, 3-chloro-4-fluorobenzenesulfonamide (0.377 g) was added as a solution in tetrahydrofuran (1 mL). The reaction was stirred for 2 hours, quenched with water (5 mL), adjusted to pH˜7 with 1N aqueous HCl, and extracted with dichloromethane (2×25 mL). The organic layer was washed with brine (25 mL), dried over magnesium sulfate, filtered and concentrated. Silica gel chromatography (Reveleris 40 g) eluting with a gradient of 0.1% to 10% methanol containing 2N NH3/dichloromethane over 30 minutes gave the title compound. quenched with water (5 mL) extracted with dichloromethane (2×25 mL) The organic layer was washed with brine (25 mL) dried over magnesium sulfate filtered concentrated Silica gel chromatography (Reveleris 40 g) eluting with a gradient of 0.1% to 10% methanol containing 2N NH3/dichloromethane over 30 minutes