(4-bromophenyl)methanesulfonyl chloride

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

Procedure: To a solution of (4-bromo-phenyl)-methanesulfonyl chloride (1.4 g, 5.2 mmol) in DCM (20 mL) at room temperature was added pyridine (1.26 mL, 15.6 mmol) followed by 3-chloroaniline (1.1 mL, 10.4 mmol) and the reaction was stirred at room temperature for 3 hours. 1 M aqueous HCl was added and then extracted with DCM, filtered through a separator, concentrated, dry loaded onto silica and purified by silica gel column chromatography (0-100% DCM in cyclohexane) to give C-(4-bromo-phenyl)-N-(3-chloro-phenyl)-methanesulfonamide (0.61 g, 1.68 mmol). 1H NMR (300 MHz, CDCl3): δ 7.49 (d, 2H), 7.26 (m, 1H), 7.13-7.15 (m, 4H), 6.96-6.98 (m, 1H), 6.31 (s, 1H), 4.31 (s, 2H). extracted with DCM filtered through a separator concentrated dry loaded onto silica purified by silica gel column chromatography (0-100% DCM in cyclohexane)

Conditions: temp:15.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of N-chlorosuccinimide (3.95 g, 29.6 mmol) in acetonitrile (11.6 mL) and 1 M HCl (2.31 mL) at 0° C. was slowly added a solution of thioacetic acid S-(4-bromo-benzyl)ester (1.81 g, 7.39 mmol) in acetonitrile (6.3 mL) over 60 minutes whilst allowing the reaction to warm to 15° C. The remaining solution was added and reaction left to warm to room temperature for 10 minutes. The mixture was cooled to 0° C. and stirred for 1 hour. Water was added and the product was extracted with EtOAc, washed with brine, dried with Na2SO4, concentrated to give (4-bromo-phenyl)-methanesulfonyl chloride (2.6 g, 9.6 mmol). 1H NMR (300 MHz, CDCl3): δ 7.60 (d, 2H), 7.36 (d, 2H), 4.81 (s, 2H). the reaction The remaining solution was added reaction left to warm to room temperature for 10 minutes The mixture was cooled to 0° C. the product was extracted with EtOAc washed with brine dried with Na2SO4 concentrated

Conditions: temp:15.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of N-chlorosuccinimide (3.95 g, 29.6 mmol) in acetonitrile (11.6 mL) and 1 M HCl (2.31 mL) at 0° C. was slowly added a solution of thioacetic acid S-(4-bromo-benzyl)ester (1.81 g, 7.39 mmol) in acetonitrile (6.3 mL) over 60 minutes whilst allowing the reaction to warm to 15° C. The remaining solution was added and reaction left to warm to room temperature for 10 minutes. The mixture was cooled to 0° C. and stirred for 1 hour. Water was added and the product was extracted with EtOAc, washed with brine, dried with Na2SO4, concentrated to give (4-bromo-phenyl)-methanesulfonyl chloride (2.6 g, 9.6 mmol). 1H NMR (300 MHz, CDCl3): δ 7.60 (d, 2H), 7.36 (d, 2H), 4.81 (s, 2H). the reaction The remaining solution was added reaction left to warm to room temperature for 10 minutes The mixture was cooled to 0° C. the product was extracted with EtOAc washed with brine dried with Na2SO4 concentrated

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

Procedure: To a solution of (4-bromo-phenyl)-methanesulfonyl chloride (1.4 g, 5.2 mmol) in DCM (20 mL) at room temperature was added pyridine (1.26 mL, 15.6 mmol) followed by 3-chloroaniline (1.1 mL, 10.4 mmol) and the reaction was stirred at room temperature for 3 hours. 1 M aqueous HCl was added and then extracted with DCM, filtered through a separator, concentrated, dry loaded onto silica and purified by silica gel column chromatography (0-100% DCM in cyclohexane) to give C-(4-bromo-phenyl)-N-(3-chloro-phenyl)-methanesulfonamide (0.61 g, 1.68 mmol). 1H NMR (300 MHz, CDCl3): δ 7.49 (d, 2 H), 7.26 (m, 1 H), 7.13-7.15 (m, 4 H), 6.96-6.98 (m, 1 H), 6.31 (s, 1 H), 4.31 (s, 2 H). extracted with DCM filtered through a separator concentrated dry loaded onto silica purified by silica gel column chromatography (0-100% DCM in cyclohexane)

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

Procedure: To a solution of (4-bromo-phenyl)-methanesulfonyl chloride (1.4 g, 5.2 mmol) in DCM (20 mL) at room temperature was added pyridine (1.26 mL, 15.6 mmol) followed by 3-chloroaniline (1.1 mL, 10.4 mmol) and the reaction was stirred at room temperature for 3 hours. 1 M aqueous HCl was added and then extracted with DCM, filtered through a separator, concentrated, dry loaded onto silica and purified by silica gel column chromatography (0-100% DCM in cyclohexane) to give C-(4-bromo-phenyl)-N-(3-chloro-phenyl)-methanesulfonamide (0.61 g, 1.68 mmol). 1H NMR (300 MHz, CDCl3): δ 7.49 (d, 2 H), 7.26 (m, 1 H), 7.13-7.15 (m, 4 H), 6.96-6.98 (m, 1 H), 6.31 (s, 1 H), 4.31 (s, 2 H). extracted with DCM filtered through a separator concentrated dry loaded onto silica purified by silica gel column chromatography (0-100% DCM in cyclohexane)

Conditions: temp:15.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of N-chlorosuccinimide (3.95 g, 29.6 mmol) in acetonitrile (11.6 mL) and 1 M HCl (2.31 mL) at 0° C. was slowly added a solution of thioacetic acid S-(4-bromo-benzyl) ester (1.81 g, 7.39 mmol) in acetonitrile (6.3 mL) over 60 minutes whilst allowing the reaction to warm to 15° C. The remaining solution was added and reaction left to warm to room temperature for 10 minutes. The mixture was cooled to 0° C. and stirred for 1 hour. Water was added and the product was extracted with EtOAc, washed with brine, dried with Na2SO4, concentrated to give (4-bromo-phenyl)-methanesulfonyl chloride (2.6 g, 9.6 mmol). 1H NMR (300 MHz, CDCl3): δ 7.60 (d, 2 H), 7.36 (d, 2 H), 4.81 (s, 2 H). the reaction The remaining solution was added reaction left to warm to room temperature for 10 minutes The mixture was cooled to 0° C. the product was extracted with EtOAc washed with brine dried with Na2SO4 concentrated

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

Procedure: While cooling with ice, 20.0 g of 4-bromobenzylsulfonyl chloride were initially charged in 200 ml of dichloromethane, and a solution of 24 ml of 2,4-dimethoxybenzylamine in 100 ml of dichloromethane was slowly added dropwise. For improved stirrability, a further 100 ml of dichloromethane were added, and the reaction mixture was allowed to come to room temperature. After stirring for 2 hours, the reaction mixture was washed with 100 ml of water, with 100 ml of 0.2 N aqueous hydrochloric acid, with 100 ml of saturated aqueous sodium hydrogencarbonate solution and finally once more with 100 ml of water. The organic phase was dried over Na2SO4, concentrated by rotary evaporation and dried under high vacuum. The residue (30 g) was used in the next reaction without further purification. to come to room temperature the reaction mixture was washed with 100 ml of water, with 100 ml of 0.2 N aqueous hydrochloric acid, with 100 ml of saturated aqueous sodium hydrogencarbonate solution and finally once more with 100 ml of water The organic phase was dried over Na2SO4 concentrated by rotary evaporation dried under high vacuum The residue (30 g) was used in the next reaction without further purification

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: The 4-bromobenzylsulfonic acid, sodium salt (12.9 g, 43.6 mmol) was combined without further purification with phosphorus pentachloride (10.8 g, 52 mmol) to form an intimate mixture. The mixture was heated to 80° C. under a nitrogen atmosphere and became homogeneous after about 30 minutes. The reaction mixture was maintained at this temperature for about 5 hours. It was then cooled, diluted with diethyl ether and added to a large volume of ice. The ether layer was separated, washed with water and a saturated brine solution and dried over magnesium sulfate. The solvent was then removed with a rotary evaporator to obtain 4-bromobenzylsulfonyl chloride (13.3 g), a small quantity of which was recrystallized from hexane for analysis. The m.p. was about 114° C. to about 116° C. and the 1H NMR spectrum confirmed that the reaction product was 4-bromobenzylsulfonylchloride. The theoretical elemental analysis for bromobenzylsulfonylchloride is: C, 31.19%; H, 2.24%; S, 11.89% and the actual analysis was: C, 31.23%; H, 2.41%; S, 11.73%. to form an intimate mixture The reaction mixture was maintained at this temperature for about 5 hours It was then cooled added to a large volume of ice The ether layer was separated washed with water a saturated brine solution and dried over magnesium sulfate The solvent was then removed with a rotary evaporator

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

Procedure: To a solution of (4-bromo-phenyl)-methanesulfonyl chloride (1.4 g, 5.2 mmol) in DCM (20 mL) at room temperature was added pyridine (1.26 mL, 15.6 mmol) followed by 3-chloroaniline (1.1 mL, 10.4 mmol) and the reaction was stirred at room temperature for 3 hours. 1 M aqueous HCl was added and then extracted with DCM, filtered through a separator, concentrated, dry loaded onto silica and purified by silica gel column chromatography (0-100% DCM in cyclohexane) to give C-(4-bromo-phenyl)-N-(3-chloro-phenyl)-methanesulfonamide (0.61 g, 1.68 mmol). 1H NMR (300 MHz, CDCl3): δ 7.49 (d, 2H), 7.26 (m, 1H), 7.13-7.15 (m, 4H), 6.96-6.98 (m, 1H), 6.31 (s, 1H), 4.31 (s, 2H). extracted with DCM filtered through a separator concentrated dry loaded onto silica purified by silica gel column chromatography (0-100% DCM in cyclohexane)

Conditions: temp:15.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of N-chlorosuccinimide (3.95 g, 29.6 mmol) in acetonitrile (11.6 mL) and 1 M HCl (2.31 mL) at 0° C. was slowly added a solution of thioacetic acid S-(4-bromo-benzyl)ester (1.81 g, 7.39 mmol) in acetonitrile (6.3 mL) over 60 minutes whilst allowing the reaction to warm to 15° C. The remaining solution was added and reaction left to warm to room temperature for 10 minutes. The mixture was cooled to 0° C. and stirred for 1 hour. Water was added and the product was extracted with EtOAc, washed with brine, dried with Na2SO4, concentrated to give (4-bromo-phenyl)-methanesulfonyl chloride (2.6 g, 9.6 mmol). 1H NMR (300 MHz, CDCl3): δ 7.60 (d, 2H), 7.36 (d, 2H), 4.81 (s, 2H). the reaction The remaining solution was added reaction left to warm to room temperature for 10 minutes The mixture was cooled to 0° C. the product was extracted with EtOAc washed with brine dried with Na2SO4 concentrated

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

Procedure: To a solution of (4-bromo-phenyl)-methanesulfonyl chloride (1.4 g, 5.2 mmol) in DCM (20 mL) at room temperature was added pyridine (1.26 mL, 15.6 mmol) followed by 3-chloroaniline (1.1 mL, 10.4 mmol) and the reaction was stirred at room temperature for 3 hours. 1 M aqueous HCl was added and then extracted with DCM, filtered through a separator, concentrated, dry loaded onto silica and purified by silica gel column chromatography (0-100% DCM in cyclohexane) to give C-(4-bromo-phenyl)-N-(3-chloro-phenyl)-methanesulfonamide (0.61 g, 1.68 mmol). 1H NMR (300 MHz, CDCl3): δ 7.49 (d, 2 H), 7.26 (m, 1 H), 7.13-7.15 (m, 4 H), 6.96-6.98 (m, 1 H), 6.31 (s, 1 H), 4.31 (s, 2 H). extracted with DCM filtered through a separator concentrated dry loaded onto silica purified by silica gel column chromatography (0-100% DCM in cyclohexane)

Conditions: temp:15.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of N-chlorosuccinimide (3.95 g, 29.6 mmol) in acetonitrile (11.6 mL) and 1 M HCl (2.31 mL) at 0° C. was slowly added a solution of thioacetic acid S-(4-bromo-benzyl) ester (1.81 g, 7.39 mmol) in acetonitrile (6.3 mL) over 60 minutes whilst allowing the reaction to warm to 15° C. The remaining solution was added and reaction left to warm to room temperature for 10 minutes. The mixture was cooled to 0° C. and stirred for 1 hour. Water was added and the product was extracted with EtOAc, washed with brine, dried with Na2SO4, concentrated to give (4-bromo-phenyl)-methanesulfonyl chloride (2.6 g, 9.6 mmol). 1H NMR (300 MHz, CDCl3): δ 7.60 (d, 2 H), 7.36 (d, 2 H), 4.81 (s, 2 H). the reaction The remaining solution was added reaction left to warm to room temperature for 10 minutes The mixture was cooled to 0° C. the product was extracted with EtOAc washed with brine dried with Na2SO4 concentrated