N-[2-(hydroxymethyl)phenyl]methanesulfonamide

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

Procedure: Manganese dioxide (85%, 45.0 g, 0.52 mol) was added to a solution of N-[2-(hydroxymethyl)phenyl]methanesulfonamide (13.0 g, 65 mmol) in dichloromethane (200 mL) at ambient temperature under nitrogen. The reaction mixture was stirred for 12 h and then filtered through a pad of Celite. The pad was washed with dichloromethane/methanol (1:1) and the combined organics were concentrated to afford N-(2-Formylphenyl)methanesulfonamide (10.1 g, 78% yield) as a yellow solid. filtered through a pad of Celite The pad was washed with dichloromethane/methanol (1:1) the combined organics were concentrated

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

Procedure: A solution of methane sulfonyl chloride (10.2 ml, 0.13 mol) in chloroform (100 mL) was added dropwise to a solution of (2-aminophenyl)methanol (15.0 g, 0.12 mol) in pyridine (100 mL) and chloroform (150 mL) under nitrogen over 1 h at 0° C. The reaction mixture was stirred for 12 h at ambient temperature and then washed with hydrochloric acid (2N, 200 ml×2). The organic phase was dried over anhydrous MgSO4 and concentrated. The residue was purified by flash column chromatography on silica gel (EtOAc/hexane=1:3) to afford N-[2-(hydroxymethyl)phenyl]methanesulfonamide (13.0 g, 53% yield) as a yellow oil. washed with hydrochloric acid (2N, 200 ml×2) The organic phase was dried over anhydrous MgSO4 concentrated The residue was purified by flash column chromatography on silica gel (EtOAc/hexane=1:3)

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

Procedure: Manganese dioxide (85%, 45.0 g, 0.52 mol) was added to a solution of N-[2-(hydroxymethyl)phenyl]methanesulfonamide (13.0 g, 65 mmol) in dichloromethane (200 mL) at ambient temperature under nitrogen. The reaction mixture was stirred for 12 h and then filtered through a pad of Celite. The pad was washed with dichloromethane/methanol (1:1) and the combined organics were concentrated to afford N-(2-Formylphenyl)methanesulfonamide (10.1 g, 78% yield) as a yellow solid. filtered through a pad of Celite The pad was washed with dichloromethane/methanol (1:1) the combined organics were concentrated

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

Procedure: A solution of methane sulfonyl chloride (10.2 ml, 0.13 mol) in chloroform (100 mL) was added dropwise to a solution of (2-aminophenyl)methanol (15.0 g, 0.12 mol) in pyridine (100 mL) and chloroform (150 mL) under nitrogen over 1 h at 0° C. The reaction mixture was stirred for 12 h at ambient temperature and then washed with hydrochloric acid (2N, 200 ml×2). The organic phase was dried over anhydrous MgSO4 and concentrated. The residue was purified by flash column chromatography on silica gel (EtOAc/hexane=1:3) to afford N-[2-(hydroxymethyl)phenyl]methanesulfonamide (13.0 g, 53% yield) as a yellow oil. washed with hydrochloric acid (2N, 200 ml×2) The organic phase was dried over anhydrous MgSO4 concentrated The residue was purified by flash column chromatography on silica gel (EtOAc/hexane=1:3)

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

Procedure: The title compound was synthesized according to the method described in WO 2008/073956 A2. To a solution of N-(2-(hydroxymethyl)phenyl)methanesulfonamide (3.44 g, 17.1 mmol) in anhydrous methylene chloride (68 mL) was added manganese dioxide (85% Aldrich, 17 g) and the mixture was stirred at ambient temperature overnight. Additional manganese dioxide (1.6 g) was added and the mixture stirred at 30° C. for 8 hours. The mixture was filtered through Celite, washing with methylene chloride, and the organic solution concentrated. The crude residue was purified by silica gel column chromatography (40-60% ethyl acetate in hexanes) to give a white solid (2.1 g, 62%). 1H NMR (CDCl3, 300 MHz) δ 10.59 (br s, 1H), 9.91 (s, 1H), 7.75-7.59 (m, 3H) 7.28-7.23 (t, 1H, J=7.5 Hz), 3.12 (s, 3H). the mixture stirred at 30° C. for 8 hours The mixture was filtered through Celite washing with methylene chloride the organic solution concentrated The crude residue was purified by silica gel column chromatography (40-60% ethyl acetate in hexanes)

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

Procedure: The title compound was synthesized according to the method described in WO 2008/073956 A2. A solution of methanesulfonyl chloride (3.4 mL, 44 mmol) in anhydrous methylene chloride (40 mL) was added dropwise to a stirring solution of 2-aminobenzylalcohol (5 g, 40.6 mmol) and anhydrous pyridine (16 mL, 203 mmol) in anhydrous methylene chloride (80 mL). The resulting mixture was stirred at room temperature for 24 hours and concentrated to ⅓ volume and diluted with ethyl acetate. The organic solution was successively washed twice with 1N aqueous hydrochloric acid, water, saturated aqueous sodium bicarbonate, and saturated aqueous sodium chloride solutions, dried (anhydrous sodium sulfate), filtered, and concentrated. The crude residue was passed through a pad of silica gel, washing with ethyl acetate/hexanes to give a yellow oil (6.1 g, 75%). 1H NMR (CDCl3, 300 MHz) δ 7.84 (br s, 1H), 7.53 (d, 1H, J=8.1 Hz), 7.36-7.30 (dt, 1H, J=1.5, 7.8 Hz), 7.25-7.21 (dd, 1H, J=1.5, 7.8 Hz), 7.16-7.11 (dt, 1H, J=1.2, 7.5 Hz), 4.77-4.75 (d, 2H, J=5.1 Hz), 3.04 (s, 3H), 2.60 (t, 1H, J=5.2 Hz). concentrated diluted with ethyl acetate The organic solution was successively washed twice with 1N aqueous hydrochloric acid, water, saturated aqueous sodium bicarbonate, and saturated aqueous sodium chloride solutions dried (anhydrous sodium sulfate) filtered concentrated washing with ethyl acetate/hexanes

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

Procedure: Manganese dioxide (85%, 45.0 g, 0.52 mol) was added to a solution of N-[2-(hydroxymethyl)phenyl]methanesulfonamide (13.0 g, 65 mmol) in dichloromethane (200 mL) at ambient temperature under nitrogen. The reaction mixture was stirred for 12 h and then filtered through a pad of Celite. The pad was washed with dichloromethane/methanol (1:1) and the combined organics were concentrated to afford N-(2-Formylphenyl)methanesulfonamide (10.1 g, 78% yield) as a yellow solid. filtered through a pad of Celite The pad was washed with dichloromethane/methanol (1:1) the combined organics were concentrated

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

Procedure: A solution of methane sulfonyl chloride (10.2 ml, 0.13 mol) in chloroform (100 mL) was added dropwise to a solution of (2-aminophenyl)methanol (15.0 g, 0.12 mol) in pyridine (100 mL) and chloroform (150 mL) under nitrogen over 1 h at 0° C. The reaction mixture was stirred for 12 h at ambient temperature and then washed with hydrochloric acid (2N, 200 ml×2). The organic phase was dried over anhydrous MgSO4 and concentrated. The residue was purified by flash column chromatography on silica gel (EtOAc/hexane=1:3) to afford N-[2-(hydroxymethyl)phenyl]methanesulfonamide (13.0 g, 53% yield) as a yellow oil. washed with hydrochloric acid (2N, 200 ml×2) The organic phase was dried over anhydrous MgSO4 concentrated The residue was purified by flash column chromatography on silica gel (EtOAc/hexane=1:3)