5-bromo-2-methylsulfonylphenol

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

Procedure: To 4-bromo-2-fluoro-1-methylsulfonyl-benzene (2 g, 7.9 mmol) in DMF (15 mL) is added 2-methanesulfonyl-ethanol (1.47 g, 11.85 mmol). Sodium hydride (948.16 mg, 23.71 mmol) is added in portions at 0° C. The reaction mixture is allowed to come to r.t. and is added dropwise into cooled aq. hydrochloric acid. The aq. layer is extracted with ethyl acetate. The organic layer is dried over MgSO4, filtered and concentrated. The crude residue is purified by reversed phase HPLC. Yield 86%, m/z 251/253[M+H]+, rt 0.42 min, LC-MS Method X018_S01. to come to r.t. is added dropwise The aq. layer is extracted with ethyl acetate The organic layer is dried over MgSO4 filtered concentrated The crude residue is purified by reversed phase HPLC Yield 86%, m/z 251/253[M+H]+, rt 0.42 min, LC-MS Method X018_S01

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

Procedure: To 4-bromo-2-fluoro-1-methylsulfonyl-benzene (2 g, 7.9 mmol) in DMF (15 mL) is added 2-methanesulfonyl-ethanol (1.47 g, 11.85 mmol). Sodium hydride (948.16 mg, 23.71 mmol) is added in portions at 0° C. The reaction mixture is allowed to come to r.t. and is added dropwise into cooled aq. hydrochloric acid. The aq. layer is extracted with ethyl acetate. The organic layer is dried over MgSO4, filtered and concentrated. The crude residue is purified by reversed phase HPLC. Yield 86%, m/z 251/253[M+H]+, rt 0.42 min, LC-MS Method X018_S01. to come to r.t. is added dropwise The aq. layer is extracted with ethyl acetate The organic layer is dried over MgSO4 filtered concentrated The crude residue is purified by reversed phase HPLC Yield 86%, m/z 251/253[M+H]+, rt 0.42 min, LC-MS Method X018_S01

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

Procedure: To 4-bromo-2-fluoro-1-methylsulfonyl-benzene (2 g, 7.9 mmol) in DMF (15 mL) is added 2-methanesulfonyl-ethanol (1.47 g, 11.85 mmol). Sodium hydride (948.16 mg, 23.71 mmol) is added in portions at 0° C. The reaction mixture is allowed to come to r.t. and is added dropwise into cooled aq. hydrochloric acid. The aq. layer is extracted with ethyl acetate. The organic layer is dried over MgSO4, filtered and concentrated. The crude residue is purified by reversed phase HPLC. Yield 86%, m/z 251/253[M+H]+, rt 0.42 min, LC-MS Method X018_S01. to come to r.t. is added dropwise The aq. layer is extracted with ethyl acetate The organic layer is dried over MgSO4 filtered concentrated The crude residue is purified by reversed phase HPLC Yield 86%, m/z 251/253[M+H]+, rt 0.42 min, LC-MS Method X018_S01