Triethylamine → Tert-butyl 3-bromo-5-{[(methylsulfonyl)oxy]methyl}benzoate

Participants

Reaction Steps

To a DCM (20 mL) solution of tert-butyl 3-bromo-5-(hydroxymethyl)benzoate (1.2 g, 4.2 mmol) was added methanesulfonyl chloride (0.62 g, 5.5 mmol) and triethylamine (1.2 mL, 8.4 mmol) at 0° C. The mixture was allowed to stir for 16 hours. TLC showed clean conversion. The reaction was diluted with DCM (100 mL), washed with 0.1 N HCl (100 mL) and brine, dried over sodium sulfate, and concentrated to afford tert-butyl 3-bromo-5-{[(methylsulfonyl)oxy]methyl}benzoate as a light yellow oil, which was used without further purification.

Provenance & Evidence