Imidazole → Benzyl 3-{[tert-butyl(dimethyl)silyl]oxy}cyclopentanecarboxylate

Participants

Reaction Steps

To a solution of benzyl 3-hydroxycyclopentanecarboxylate (1.0 g, 4.54 mmol) in 9 ml of degassed DMF was added imidazole (0.34 g, 4.99 mmol) and tert-butyldimethylsilyl chloride (0.75 g, 4.99 mmol). The mixture was stirred at ambient temperature for 4 hours, and then poured into 70 mL of water, and extracted with ethyl acetate. The combined ethyl acetate extracts were washed with water and brine and then dried over sodium sulfate. Filtration and concentration afforded the crude product which was subjected to chromatography on silica gel eluting with 5% EtOAc in hexanes to give benzyl 3-{[tert-butyl(dimethyl)silyl]oxy}cyclopentanecarboxylate.

Provenance & Evidence