Triethylamine → HCID 86601498, compound

Participants

Reaction Steps

Triethylamine (0.52 ml, 3.7 mmol) and tert-butyl dimethylsilyltrifluoromethanesulfonate (0.51 ml, 2.2 mmol) were added dropwise in that order to a solution of 1-{3-(tert-butyl)-5-[(3S,4S)-3-ethoxy-4-(methoxymethoxy)tetrahydro-1H-1-pyrrolyl]-4-methoxyphenyl}-1-ethanone (650 mg, 1.71 mmol) in tetrahydrofuran (7 ml) while cooling on ice, and the mixture was stirred at the same temperature for 25 minutes. N-bromosuccinimide (427 mg, 2.40 mmol) was then added and stirring was continued at the same temperature for 25 minutes. After completion of the reaction, the reaction mixture was diluted with saturated aqueous sodium hydrogencarbonate and ethyl acetate and the organic layer was separated. The organic layer was washed with brine and then dried over anhydrous magnesium sulfate. The residue was purified by silica gel column chromatography (solvent: n-hexane-ethyl acetate) to yield the title compound (795 mg, 100%) as a light yellow oil.

Provenance & Evidence