3-chloro-N-methylpropane-1-sulfonamide

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

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

Procedure: 3-Chloropropylsulfonyl chloride 1 (16.8 g, 94.9 mmol), ethylamine hydrochloride (13.5 g, 200 mmol), and potassium carbonate (27.6 g, 200 mmol) were sequentially added to ethyl acetate (500 ml). After the addition of N-benzyltrimethylammonium chloride (about 200 mg) to the mixture, the resultant mixture was stirred for 2 hours at room temperature and dried over anhydrous sodium sulfate. The mixture was filtered through a small amount of silica gel and the filtrate was concentrated in vacuo to give 12 g (74%) of crude N-methyl-3-chloropropylsulfonamide (intermediate 3b) as a pale yellow oil. dried over anhydrous sodium sulfate The mixture was filtered through a small amount of silica gel the filtrate was concentrated in vacuo

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

Procedure: 3-Chloropropylsulfonyl chloride 1 (16.8 g, 94.9 mmol), ethylamine hydrochloride (13.5 g, 200 mmol), and potassium carbonate (27.6 g, 200 mmol) were sequentially added to ethyl acetate (500 ml). After the addition of N-benzyltrimethylammonium chloride (about 200 mg) to the mixture, the resultant mixture was stirred for 2 hours at room temperature and dried over anhydrous sodium sulfate. The mixture was filtered through a small amount of silica2 gel and the filtrate was concentrated in vacuo to give 12 g (74%) of crude N-methyl-3-chloropropylsulfonamide (intermediate 3b) as a pale yellow oil. dried over anhydrous sodium sulfate The mixture was filtered through a small amount of silica2 gel the filtrate was concentrated in vacuo

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

Procedure: 3-Chloropropylsulfonyl chloride 1 (16.8 g, 94.9 mmol), ethylamine hydrochloride (13.5 g, 200 mmol), and potassium carbonate (27.6 g, 200 mmol) were sequentially added to ethyl acetate (500 ml). After the addition of N-benzyltrimethylammonium chloride (about 200 mg) to the mixture, the resultant mixture was stirred for 2 hours at room temperature and dried over anhydrous sodium sulfate. The mixture was filtered through a small amount of silica2 gel and the filtrate was concentrated in vacuo to give 12 g (74%) of crude N-methyl-3-chloropropylsulfonamide (intermediate 3b) as a pale yellow oil. dried over anhydrous sodium sulfate The mixture was filtered through a small amount of silica2 gel the filtrate was concentrated in vacuo

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 3-chloro-N-methylpropane-1-sulfonamide (29 mmol), NaN3 (29 mmol) in DMF (50 ml) was stirred at 100° C. for 2 h. The mixture was poured into 40 ml of brine. The mixture was extracted with ether (3×30 ml). The organic layers were combined and washed with 20 ml of brine. The organic layer was dried with Na2SO4, filtered and the filtrate was evaporated. Yield: 4.2 g (90% purity, 81% yield). The mixture was extracted with ether (3×30 ml) washed with 20 ml of brine The organic layer was dried with Na2SO4 filtered the filtrate was evaporated

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

Procedure: 3-Chloropropylsulfonyl chloride 1 (16.8 g, 94.9 mmol), ethylamine hydrochloride (13.5 g, 200 mmol), and potassium carbonate (27.6 g, 200 mmol) were sequentially added to ethyl acetate (500 ml). After the addition of N-benzyltrimethylammonium chloride (about 200 mg) to the mixture, the resultant mixture was stirred for 2 hours at room temperature and dried over anhydrous sodium sulfate. The mixture was filtered through a small amount of silica gel and the filtrate was concentrated in vacuo to give 12 g (74%) of crude N-methyl-3-chloropropylsulfonamide (intermediate 3b) as a pale yellow oil. dried over anhydrous sodium sulfate The mixture was filtered through a small amount of silica gel the filtrate was concentrated in vacuo

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

Procedure: 3-Chloropropylsulfonyl chloride 1 (16.8 g, 94.9 mmol), ethylamine hydrochloride (13.5 g, 200 mmol), and potassium carbonate (27.6 g, 200 mmol) were sequentially added to ethyl acetate (500 ml). After the addition of N-benzyltrimethylammonium chloride (about 200 mg) to the mixture, the resultant mixture was stirred for 2 hours at room temperature and dried over anhydrous sodium sulfate. The mixture was filtered through a small amount of silica gel and the filtrate was concentrated in vacuo to give 12 g (74%) of crude N-methyl-3-chloropropylsulfonamide (intermediate 3b) as a pale yellow oil. dried over anhydrous sodium sulfate The mixture was filtered through a small amount of silica gel the filtrate was concentrated in vacuo

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

Procedure: 3-Chloropropylsulfonyl chloride 1 (6.8 g,94.9 mmol), methylamine hydrochloride (13.5 g,200 mmol), and potassium carbonate (27.6 g,200 mmol) were added in turn to ethyl acetate (500 ml). After the addition of N-benzyltrimethylammonium chloride (about 200 mg), the resultant mixture was stirred for 2 hours at room temperature and dried over anhydrous sodium sulfate. The mixture was filtered through a small amount of silica gel and the filtrate was concentrated in vacuo to give 12 g (74%) of crude N-methyl-3-chloropropylsulfonamide (intermediate 3b) as a pale yellow oil. dried over anhydrous sodium sulfate The mixture was filtered through a small amount of silica gel the filtrate was concentrated in vacuo

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

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

Procedure: 3-Chloropropylsulfonyl chloride 1 (6.8 g,94.9 mmol), methylamine hydrochloride (13.5 g,200 mmol), and potassium carbonate (27.6 g,200 mmol) were added in turn to ethyl acetate (500 ml). After the addition of N-benzyltrimethylammonium chloride (about 200 mg), the resultant mixture was stirred for 2 hours at room temperature and dried over anhydrous sodium sulfate. The mixture was filtered through a small amount of silica gel and the filtrate was concentrated in vacuo to give 12 g (74%) of crude N-methyl-3-chloropropylsulfonamide (intermediate 3b) as a pale yellow oil. dried over anhydrous sodium sulfate The mixture was filtered through a small amount of silica gel the filtrate was concentrated in vacuo

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

Procedure: 3-Chloropropylsulfonyl chloride 1 (16.8 g, 94.9 mmol), ethylamine hydrochloride (13.5 g, 200 mmol), and potassium carbonate (27.6 g, 200 mmol) were sequentially added to ethyl acetate (500 ml). After the addition of N-benzyltrimethylammonium chloride (about 200 mg) to the mixture, the resultant mixture was stirred for 2 hours at room temperature and dried over anhydrous sodium sulfate. The mixture was filtered through a small amount of silica2 gel and the filtrate was concentrated in vacuo to give 12 g (74%) of crude N-methyl-3-chloropropylsulfonamide (intermediate 3b) as a pale yellow oil. dried over anhydrous sodium sulfate The mixture was filtered through a small amount of silica2 gel the filtrate was concentrated in vacuo

Conditions: temp:100.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 3-chloro-N-methylpropane-1-sulfonamide (29 mmol), NaN3 (29 mmol) in DMF (50 ml) was stirred at 100° C. for 2 h. The mixture was poured into 40 ml of brine. The mixture was extracted with ether (3×30 ml). The organic layers were combined and washed with 20 ml of brine. The organic layer was dried with Na2SO4, filtered and the filtrate was evaporated. Yield: 4.2 g (90% purity, 81% yield). The mixture was extracted with ether (3×30 ml) washed with 20 ml of brine The organic layer was dried with Na2SO4 filtered the filtrate was evaporated