Triethylamine → HCID 86665251, compound

Participants

Reaction Steps

To a solution of ethyl (6S)-5′-bromo-2′-oxo-1′,2′,5,7-tetrahydrospiro[cyclopenta[b]pyridine-6,3′-pyrrolo[2,3-b]pyridine]-3-carboxylate (3.00 g, 7.73 mmol) in THF (30 mL) at 0° C. was added triethylamine (1.29 mL, 9.28 mmol). The resulting mixture was stirred for 10 min, then 2-(trimethylsilyl)ethoxymethyl chloride (1.64 mL, 9.27 mmol) was added dropwise. The reaction mixture was allowed to warm slowly to ambient temperature and stirring was continued for 4 h. The reaction mixture was poured into saturated aqueous sodium bicarbonate (50 mL) and the mixture was extracted with EtOAc (2×75 mL). The combined organic layers were dried over sodium sulfate, filtered, and concentrated to dryness in vacuo. The crude product was purified by silica gel chromatography, eluting with a gradient of CH2Cl2:EtOAc—100:0 to 50:50, to give the title compound. MS: m/z=520.3 (M+1).

Provenance & Evidence