N-tert-butylsulfamoyl chloride

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a round bottom flask equipped with a magnetic stirrer were added 1.10 g (3.20 mmol) of toluene-4-thiosulfonic acid S-(2-tert-butyl-4-hydroxy-5-methyl-phenyl) ester (prepared in Example RRR), Et2O (50 mL), and 0.90 mL (6.40 mmol) of NEt3, in that order. The solution was cooled to 0° C. To this solution was rapidly added a solution of 1.10 g (6.40 mmol) of (tert-butyl amino)sulfonyl chloride (Matler, W. L., Comer, W. T., and Deitchman, D., Journal of Medicinal Chemistry, 1972, 15 (5), 538-541) in Et2O (10 mL). A precipitate ensued and the reaction was allowed to stir for 30 minutes. Another two equivalents of (tert-butyl amino)sulfonyl chloride (1.10 g, 6.40 mmol) in Et2O (10 mL) and NEt3 (0.90 mL, 6.40 mmol) were added, and the reaction mixture was stirred for another 30 minutes. The reaction was quenched with brine and the organics extracted with Et2O. The organics were dried (MgSO4) and concentrated. The residue was submitted to flash chromatography (EtOAc:CHCl3 1:9) to yield the title compound. 1H NMR (CDCl3) δ 1.23 (s, 9 H), 1.46 (s, 9 H), 2.25 (s, 3 H), 2.42 (s, 3 H), 4.63 (br s, 1 H), 7.23 (s, 1 H), 7.26 (s, obscured by CDCl3, 1 H), 7.42 (d, 2 H), 7.46 (d, 2 H). To a round bottom flask equipped with a magnetic stirrer the reaction mixture was stirred for another 30 minutes The reaction was quenched with brine the organics extracted with Et2O The organics were dried (MgSO4) concentrated

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

Procedure: To a mixture of N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-aminobenzamide (1.0 g), dry methylene chloride (20 ml), and triethylamine (693 mg) is added dropwise a mixture of t-butylaminosulfonyl chloride (707 mg) and methylene chloride (5 ml) with ice cooling and stirring. After stirring for 15 minutes, the reaction mixture is mixed with aqueous sodium hydrogencarbonate and shaken with methylene chloride. The organic layer is washed with water, dried over sodium sulfate, and evaporated to remove the solvent. The residue is chromatographed on a column of alumina and eluted with 0-2% methanol/methylene chloride. The eluate is recrystallized from ethyl acetate/isopropyl ether to give N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-t-butylaminosulfonamidobenzamide (1.0 g) as crystals melting at 167° to 168° C. is added dropwise After stirring for 15 minutes The organic layer is washed with water dried over sodium sulfate evaporated to remove the solvent The residue is chromatographed on a column of alumina eluted with 0-2% methanol/methylene chloride The eluate is recrystallized from ethyl acetate/isopropyl ether

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

Procedure: To a mixture of N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-aminobenzamide (1.0 g), dry methylene chloride (20 ml), and triethylamine (693 mg) is added dropwise a mixture of t-butylaminosulfonyl chloride (707 mg) and methylene chloride (5 ml) with ice cooling and stirring. After stirring for 15 minutes, the reaction mixture is mixed with aqueous sodium hydrogencarbonate and shaken with methylene chloride. The organic layer is washed with water, dried over sodium sulfate, and evaporated to remove the solvent. The residue is chromatographed on a column of alumina and eluted with 0-2% methanol/methylene chloride. The eluate is recrystallized from ethyl acetate/isopropyl ether to give N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-t-butylaminosulfonamidobenzamide (1.0 g) as crystals melting at 167° to 168° C. is added dropwise After stirring for 15 minutes The organic layer is washed with water dried over sodium sulfate evaporated to remove the solvent The residue is chromatographed on a column of alumina eluted with 0-2% methanol/methylene chloride The eluate is recrystallized from ethyl acetate/isopropyl ether

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

Procedure: To a mixture of N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-aminobenzamide (1.0 g), dry methylene chloride (20 ml), and triethylamine (693 mg) is added dropwise a mixture of t-butylaminosulfonyl chloride (707 mg) and methylene chloride (5 ml) with ice cooling and stirring. After stirring for 15 minutes, the reaction mixture is mixed with aqueous sodium hydrogencarbonate and shaken with methylene chloride. The organic layer is washed with water, dried over sodium sulfate, and evaporated to remove the solvent. The residue is chromatographed on a column of alumina and eluted with 0-2% methanol/methylene chloride. The eluate is recrystallized from ethyl acetate/isopropyl ether to give N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-t-butylaminosulfonamidobenzamide (1.0 g) as crystals melting at 167° to 168° C. is added dropwise After stirring for 15 minutes The organic layer is washed with water dried over sodium sulfate evaporated to remove the solvent The residue is chromatographed on a column of alumina eluted with 0-2% methanol/methylene chloride The eluate is recrystallized from ethyl acetate/isopropyl ether

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

Procedure: To a mixture of N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-aminobenzamide (1.0 g), dry methylene chloride (20 ml), and triethylamine (693 mg) is added dropwise a mixture of t-butylaminosulfonyl chloride (707 mg) and methylene chloride (5 ml) with ice cooling and stirring. After stirring for 15 minutes, the reaction mixture is mixed with aqueous sodium hydrogencarbonate and shaken with methylene chloride. The organic layer is washed with water, dried over sodium sulfate, and evaporated to remove the solvent. The residue is chromatographed on a column of alumina and eluted with 0-2% methanol/methylene chloride. The eluate is recrystallized from ethyl acetate/isopropyl ether to give N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-t-butylaminosulfonamidobenzamide (1.0 g) as crystals melting at 167° to 168° C. is added dropwise After stirring for 15 minutes The organic layer is washed with water dried over sodium sulfate evaporated to remove the solvent The residue is chromatographed on a column of alumina eluted with 0-2% methanol/methylene chloride The eluate is recrystallized from ethyl acetate/isopropyl ether

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a round bottom flask equipped with a magnetic stirrer were added 1.10 g (3.20 mmol) of toluene-4-thiosulfonic acid S-(2-tert-butyl-4-hydroxy-5-methyl-phenyl) ester (prepared in Example RRR), Et2O (50 mL), and 0.90 mL (6.40 mmol) of NEt3, in that order. The solution was cooled to 0° C. To this solution was rapidly added a solution of 1.10 g (6.40 mmol) of (tert-butyl amino)sulfonyl chloride (Matler, W. L., Comer, W. T., and Deitchman, D., Journal of Medicinal Chemistry, 1972,15 (5), 538-541) in Et2O (10 mL). A precipitate ensued and the reaction was allowed to stir for 30 minutes. Another two equivalents of (tert-butyl amino)sulfonyl chloride (1.10 g, 6.40 mmol) in Et2O (10 mL) and NEt3 (0.90 mL, 6.40 mmol) were added, and the reaction mixture was stirred for another 30 minutes. The reaction was quenched with brine and the organics extracted with Et2O. The organics were dried (MgSO4) and concentrated. The residue was submitted to flash chromatography (EtOAc:CHCl3 1:9) to yield the title compound. 1H NMR (CDCl3) δ 1.23 (s, 9 H), 1.46 (s, 9 H), 2.25 (s, 3 H), 2.42 (s, 3 H), 4.63 (br s, 1 H), 7.23 (s, 1 H), 7.26 (s, obscured by CDCl3, 1 H), 7.42 (d, 2 H), 7.46 (d, 2 H). To a round bottom flask equipped with a magnetic stirrer the reaction mixture was stirred for another 30 minutes The reaction was quenched with brine the organics extracted with Et2O The organics were dried (MgSO4) concentrated

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a round bottom flask equipped with a magnetic stirrer were added 1.10 g (3.20 mmol) of toluene-4-thiosulfonic acid S-(2-tert-butyl-4-hydroxy-5-methyl-phenyl) ester (prepared in Example RRR), Et2O (50 mL), and 0.90 mL (6.40 mmol) of NEt3, in that order. The solution was cooled to 0° C. To this solution was rapidly added a solution of 1.10 g (6.40 mmol) of (tert-butyl amino)sulfonyl chloride (Matler, W. L., Comer, W. T., and Deitchman, D., Journal of Medicinal Chemistry, 1972,15 (5), 538-541) in Et2O (10 mL). A precipitate ensued and the reaction was allowed to stir for 30 minutes. Another two equivalents of (tert-butyl amino)sulfonyl chloride (1.10 g, 6.40 mmol) in Et2O (10 mL) and NEt3 (0.90 mL, 6.40 mmol) were added, and the reaction mixture was stirred for another 30 minutes. The reaction was quenched with brine and the organics extracted with Et2O. The organics were dried (MgSO4) and concentrated. The residue was submitted to flash chromatography (EtOAc:CHCl3 1:9) to yield the title compound. 1H NMR (CDCl3) δ 1.23 (s, 9 H), 1.46 (s, 9 H), 2.25 (s, 3 H), 2.42 (s, 3 H), 4.63 (br s, 1 H), 7.23 (s, 1 H), 7.26 (s, obscured by CDCl3, 1 H), 7.42 (d, 2 H), 7.46 (d, 2 H). To a round bottom flask equipped with a magnetic stirrer the reaction mixture was stirred for another 30 minutes The reaction was quenched with brine the organics extracted with Et2O The organics were dried (MgSO4) concentrated

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a round bottom flask equipped with a magnetic stirrer were added 1.10 g (3.20 mmol) of toluene-4-thiosulfonic acid S-(2-tert-butyl-4-hydroxy-5-methyl-phenyl) ester (prepared in Example RRR), Et2O (50 mL), and 0.90 mL (6.40 mmol) of NEt3, in that order. The solution was cooled to 0° C. To this solution was rapidly added a solution of 1.10 g (6.40 mmol) of (tert-butyl amino)sulfonyl chloride (Matler, W. L., Comer, W. T., and Deitchman, D., Journal of Medicinal Chemistry, 1972, 15 (5), 538-541) in Et2O (10 mL). A precipitate ensued and the reaction was allowed to stir for 30 minutes. Another two equivalents of (tert-butyl amino)sulfonyl chloride (1.10 g, 6.40 mmol) in Et2O (10 mL) and NEt3 (0.90 mL, 6.40 mmol) were added, and the reaction mixture was stirred for another 30 minutes. The reaction was quenched with brine and the organics extracted with Et2O. The organics were dried (MgSO4) and concentrated. The residue was submitted to flash chromatography (EtOAc:CHCl3 1:9) to yield the title compound. 1H NMR (CDCl3) δ 1.23 (s, 9 H), 1.46 (s, 9 H), 2.25 (s, 3 H), 2.42 (s, 3 H), 4.63 (br s, 1 H), 7.23 (s, 1 H), 7.26 (s, obscured by CDCl3, 1 H), 7.42 (d, 2 H), 7.46 (d, 2 H). To a round bottom flask equipped with a magnetic stirrer the reaction mixture was stirred for another 30 minutes The reaction was quenched with brine the organics extracted with Et2O The organics were dried (MgSO4) concentrated

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

Procedure: To a mixture of N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-aminobenzamide (1.0 g), dry methylene chloride (20 ml), and triethylamine (693 mg) is added dropwise a mixture of t-butylaminosulfonyl chloride (707 mg) and methylene chloride (5 ml) with ice cooling and stirring. After stirring for 15 minutes, the reaction mixture is mixed with aqueous sodium hydrogencarbonate and shaken with methylene chloride. The organic layer is washed with water, dried over sodium sulfate, and evaporated to remove the solvent. The residue is chromatographed on a column of alumina and eluted with 0-2% methanol/methylene chloride. The eluate is recrystallized from ethyl acetate/isopropyl ether to give N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-t-butylaminosulfonamidobenzamide (1.0 g) as crystals melting at 167° to 168° C. is added dropwise After stirring for 15 minutes The organic layer is washed with water dried over sodium sulfate evaporated to remove the solvent The residue is chromatographed on a column of alumina eluted with 0-2% methanol/methylene chloride The eluate is recrystallized from ethyl acetate/isopropyl ether

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

Procedure: To a mixture of N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-aminobenzamide (1.0 g), dry methylene chloride (20 ml), and triethylamine (693 mg) is added dropwise a mixture of t-butylaminosulfonyl chloride (707 mg) and methylene chloride (5 ml) with ice cooling and stirring. After stirring for 15 minutes, the reaction mixture is mixed with aqueous sodium hydrogencarbonate and shaken with methylene chloride. The organic layer is washed with water, dried over sodium sulfate, and evaporated to remove the solvent. The residue is chromatographed on a column of alumina and eluted with 0-2% methanol/methylene chloride. The eluate is recrystallized from ethyl acetate/isopropyl ether to give N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-t-butylaminosulfonamidobenzamide (1.0 g) as crystals melting at 167° to 168° C. is added dropwise After stirring for 15 minutes The organic layer is washed with water dried over sodium sulfate evaporated to remove the solvent The residue is chromatographed on a column of alumina eluted with 0-2% methanol/methylene chloride The eluate is recrystallized from ethyl acetate/isopropyl ether

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

Procedure: To a mixture of N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-aminobenzamide (1.0 g), dry methylene chloride (20 ml), and triethylamine (693 mg) is added dropwise a mixture of t-butylaminosulfonyl chloride (707 mg) and methylene chloride (5 ml) with ice cooling and stirring. After stirring for 15 minutes, the reaction mixture is mixed with aqueous sodium hydrogencarbonate and shaken with methylene chloride. The organic layer is washed with water, dried over sodium sulfate, and evaporated to remove the solvent. The residue is chromatographed on a column of alumina and eluted with 0-2% methanol/methylene chloride. The eluate is recrystallized from ethyl acetate/isopropyl ether to give N-(1-ethyl-2-pyrrolidinylmethyl)-2-methoxy-4-methyl-5-t-butylaminosulfonamidobenzamide (1.0 g) as crystals melting at 167° to 168° C. is added dropwise After stirring for 15 minutes The organic layer is washed with water dried over sodium sulfate evaporated to remove the solvent The residue is chromatographed on a column of alumina eluted with 0-2% methanol/methylene chloride The eluate is recrystallized from ethyl acetate/isopropyl ether

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

Procedure: Method as for preparation 10 using tert-butyl(3R)-3-[3-(aminomethyl)-1,2,4-oxadiazol-5-yl]-6-cyclohexylhexanoate (preparation 18) (200 mg, 0.57 mmol) and N-tert-butylsulfamoyl chloride (J. Org. Chem.; 1976, 41, 4028) (108 mg, 0.63 mmol) as starting materials and pyridine as base.