Imidazole → HCID 71114747, compound

Participants

Reaction Steps

tert-Butyl 3-((S)-4-benzyl-2-oxooxazolidine-3-carbonyl)-5-hydroxyvalerate (401 g) and DMF (2000 mL) were mixed. To the mixture were added imidazole (160 g) and tert-butylchlorodiphenylsilane (287 mL) at ice temperature. The mixture was stirred at RT for 1 hr. After pouring water (1.2 L) into the reaction, the mixture was extracted with toluene (2.3 L). The organic layer was washed with aqueous 20 w/v % citric acid (1.6 L), water (2 L) and 10 w/v % brine (1.6 L), then dried over sodium sulfate. The sodium sulfate was filtered off and the filtrate was concentrated in vacuo to give the title compound (744.2 g) as a crude product.

Provenance & Evidence