Imidazole → HCID 58464027, compound

Participants

Reaction Steps

(2.4 g, 3.47 mmol, 50%) (4RS)-4-Hydroxy-1-(5-iodo-pyridin-2-yl)-3,3-dimethyl-pyrrolidine-2,5-dione (Example 14, step 2) was dissolved in dichloromethane (20 ml). Imidazole (520 mg, 7.63 mmol) and tert-butyldiphenylchlorosilane (1.0 g, 3.64 mmol) were added at room temperature and the mixture was stirred for 3 hours at room temperature. Sat. NaHCO3 solution was added and the mixture was extracted with dichloromethane. The organic extracts were dried with sodium sulfate, filtered and evaporated. The crude product was purified by flash chromatography on silica gel (ethyl acetate/heptane gradient 0:100 to 30:70). The desired compound was obtained as a white solid (1.5 g, 74% yield), MS: m/e=585.1 (M+H+).

Provenance & Evidence