Sodium hydride → HCID 86689576, compound

Participants

Reaction Steps

A solution of (S)-tert-butyl 1-{3-bromo-4-[5-(4-methoxyphenyl)thiophene-2-carboxamido]phenyl}pyrrolidin-3-ylcarbamate (400 mg, 0.69 mmol) in THF (20 mL) was cooled to 0° C. and sodium hydride (60 wt %, 140 mg, 3.5 mmol) was added. The reaction was warmed to room temperature followed by the addition of 2-(trimethylsilyl)ethoxymethyl chloride (370 mL, 2.1 mmol) and the reaction mixture was stirred at room temperature for 18 h. The reaction mixture was quenched with water and diluted with ethyl acetate. The layers were separated and the organic layer was dried over anhydrous sodium sulfate, filtered, concentrated and the residue was purified by column chromatography (silica, 0-30% ethyl acetate/heptane) to afford the desired product (400 mg, 87%): ESI MS m/z 703 [C33H44BrN3O5SSi+H]+.

Provenance & Evidence