Water → Methyl 2-(2-bromo-1-benzothiophen-3-yl)-2-(tert-butoxy)acetate

Participants

Reaction Steps

N-bromosuccinimide (67 mg, 0.37 mmol) was added at room temperature to a stirred solution of methyl 2-(1-benzothiophen-3-yl)-2-(tert-butoxy)acetate (4b) (70 mg, 0.25 mmol) in acetonitrile (2 mL) under a nitrogen atmosphere. After 20 hours, water (10 mL) was added and the reaction mixture was extracted with dichloromethane (2×10 mL). The organic layer was washed with brine (10 mL), dried over sodium sulfate, filtered and evaporated to dryness. The residue was purified by flash chromatography on silica gel (cyclohexane/ethyl acetate 90/10) to afford the desired product (4c) as a pale oil (40 mg, 0.11 mmol, 45%).

Provenance & Evidence