Triethylamine → 3-({[Tert-butyl(diphenyl)silyl]oxy}methyl)-5-chlorobenzyl methanesulfonate

Participants

Reaction Steps

Triethylamine (7.8 mL, 56 mmol) and methanesulfonyl chloride (2.9 mL, 37 mmol) were added to a solution of [3-({[tert-butyl(diphenyl)silyl]oxy}methyl)-5-chlorophenyl]methanol (7.65 g, 18.6 mmol, from Step 2) in DCM (50 mL) at 0° C. The cooling bath was removed and after reaction mixture warmed to room temperature, the reaction mixture was diluted with DCM and washed with water. The aqueous layer was extracted with two further portions of DCM. The combined organic extracts were washed with brine, dried over sodium sulfate, filtered and concentrated. The product was purified by flash chromatography, eluting with a gradient from 0-40% EtOAc/hexanes. Yield: (6.8 g, 75%).

Provenance & Evidence