methanesulfinyl chloride

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:

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

Procedure: 19.7 g (0.2 mol) of methylsulphinyl chloride are dissolved in 500 ml of methylene chloride. 36.0 g (0.2 mol) of 1-(2-acetylaminoethyl)-2,5-dimethylpyrrole and 27.6 ml (0.2 mol) of triethylamine in 500 ml of methylene chloride are added dropwise at 0° C. and the mixture is stirred at 0° C. for 45 minutes and poured onto aqueous sodium bicarbonate solution. The organic phase is separated off and discarded. The aqueous phase is concentrated and the residue is boiled up with isopropanol and, after the mixture has been concentrated, the product is chromatographed. The organic phase is separated off The aqueous phase is concentrated after the mixture has been concentrated the product is chromatographed

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

Procedure: A solution of methanesulphinyl chloride (0.98 g) in dichloromethane (10 ml) was added dropwise at room temperature to a stirred solution of 6-chloro-2,3,4,5-tetrahydro-1,4-benzothiazepine (1.99 g, prepared in a similar manner to its hydrochloride, Example 1 above) and triethylamine (1.01 g) in dichloromethane (50 ml). The reaction mixture was stirred at room temperature for one hour, washed with water, dried and the solvent was removed by evaporation. Purification of the residue by flash chromatography using dichloromethane/ethanol (98:2) as eluent gave 6-chloro-4-methylsulphinyl-2,3,4,5-tetrahydro-1,4-benzothiazepine, which was recrystallised from ethylacetate/hexane. Yield 2.1 g (m.p. 82°-84° C.). washed with water dried the solvent was removed by evaporation Purification of the residue by flash chromatography

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

Procedure: A solution of methanesulphinyl chloride (0.98 g) in dichloromethane (10 ml) was added dropwise at room temperature to a stirred solution of 6-chloro-2,3,4,5-tetrahydro-1,4-benzothiazepine (1.99 g, prepared in a similar manner to its hydrochloride, Example 1 above) and triethylamine (1.01 g) in dichloromethane (50 ml). The reaction mixture was stirred at room temperature for one hour, washed with water, dried and the solvent was removed by evaporation. Purification of the residue by flash chromatography using dichloromethane/ethanol (98:2) as eluent gave 6-chloro-4-methylsulphinyl-2,3,4,5-tetrahydro-1,4-benzothiazepine, which was recrystallised from ethylacetate/hexane. Yield 2.1 g (m.p. 82°-84° C.). washed with water dried the solvent was removed by evaporation Purification of the residue by flash chromatography

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

Procedure: Methanesulfinyl chloride was obtained as described in the literature. A solution of C-(6-chloro-pyridin-3-yl)-methylamine (2.1) (25 g, 178 mmol) in tetrahydrofuran (200 ml) was cooled to 0° C. and methanesulfinyl chloride (7 g, 71 mmol) was added dropwise. The solution was allowed to warm to room temperature and stirred for 16 hours. The precipitate was removed by filtration, the filtrate was diluted with EtOAc and washed with H2O. The organic phase was dried over Na2SO4 and evaporated under reduced pressure. The precipitate was removed by filtration the filtrate was diluted with EtOAc washed with H2O The organic phase was dried over Na2SO4 evaporated under reduced pressure

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Phosphorus pentachloride (79.3 g, 0.381 mole) and sodium (methylsulfonyl)methanesulfonate (Formula II with Y=Na, X=H and R=CH3 ; 70 g, 0.359 mole) were stirred with 150 ml of phosphorus oxychloride. As the mixture was warmed to 70° C. in an oil bath, hydrogen chloride was slowly evolved, and the slurry thinned enough to be stirred with a magnetic stirrer. The mixture was heated for 18 hours in an oil bath at 80°-90° C., cooled, and filtered, and the residue was washed with dry chloroform. The chloroform caused the product to precipitate in the filtrate. The precipitate was collected, washed with a small amount of chloroform, and dried over sodium hydroxide pellets: yield, 28.5 g (41%); mp 109°-111° C.; MS (direct-probe temperature, 20° C.) m/e 193 (M+H), 192 (M), 177 (M-CH3), 157 (CH3SO2CH2SO2), 143, 141, 113 (CH2SO2Cl), 98 (CH3SOCl), 94, 93 (CH3SO2CH2), 79 (CH3SO2), 78, 64, 63 (CH3SO); IR (cm-1, strong and medium bands) 3045, 3025, 2995 s, 2930 s, 1405, 1390 s, 1380 s, 1360, 1335 s, 1325 sh, 1315 s, 1225, 1175 s, 1160 s, 1110 s, 980 s, 965, 860 s, 760 s, 695, 595 s, 515 s, 495 s, 460 s. The mixture was heated for 18 hours in an oil bath at 80°-90° C. cooled filtered the residue was washed with dry chloroform to precipitate in the filtrate The precipitate was collected washed with a small amount of chloroform dried over sodium hydroxide pellets yield IR (cm-1, strong and medium bands) 3045, 3025, 2995 s, 2930 s, 1405, 1390 s, 1380 s, 1360, 1335 s, 1325 sh, 1315 s, 1225, 1175 s, 1160 s, 1110 s, 980 s, 965, 860 s, 760 s, 695, 595 s, 515 s, 495 s, 460 s

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

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

Conditions: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Phosphorus pentachloride (79.3 g, 0.381 mole) and sodium (methylsulfonyl)methanesulfonate (Formula II with Y=Na, X=H and R=CH3 ; 70 g, 0.359 mole) were stirred with 150 ml of phosphorus oxychloride. As the mixture was warmed to 70° C. in an oil bath, hydrogen chloride was slowly evolved, and the slurry thinned enough to be stirred with a magnetic stirrer. The mixture was heated for 18 hours in an oil bath at 80°-90° C., cooled, and filtered, and the residue was washed with dry chloroform. The chloroform caused the product to precipitate in the filtrate. The precipitate was collected, washed with a small amount of chloroform, and dried over sodium hydroxide pellets: yield, 28.5 g (41%); mp 109°-111° C.; MS (direct-probe temperature, 20° C.) m/e 193 (M+H), 192 (M), 177 (M-CH3), 157 (CH3SO2CH2SO2), 143, 141, 113 (CH2SO2Cl), 98 (CH3SOCl), 94, 93 (CH3SO2CH2), 79 (CH3SO2), 78, 64, 63 (CH3SO); IR (cm-1, strong and medium bands) 3045, 3025, 2995 s, 2930 s, 1405, 1390 s, 1380 s, 1360, 1335 s, 1325 sh, 1315 s, 1225, 1175 s, 1160 s, 1110 s, 980 s, 965, 860 s, 760 s, 695, 595 s, 515 s, 495 s, 460 s. The mixture was heated for 18 hours in an oil bath at 80°-90° C. cooled filtered the residue was washed with dry chloroform to precipitate in the filtrate The precipitate was collected washed with a small amount of chloroform dried over sodium hydroxide pellets yield IR (cm-1, strong and medium bands) 3045, 3025, 2995 s, 2930 s, 1405, 1390 s, 1380 s, 1360, 1335 s, 1325 sh, 1315 s, 1225, 1175 s, 1160 s, 1110 s, 980 s, 965, 860 s, 760 s, 695, 595 s, 515 s, 495 s, 460 s