Imidazole → cis-4-((t-Butyldimethylsilyl)oxy)cyclohexan-1-ol

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To a solution of 1,4-cyclohexanediol (5 g, 43 mmol), imidazole (2.92 g, 43 mmol) and NEt3 (7 mL) in CH2Cl2 (100 mL) cooled in an ice bath was added tert-butyldimethylsilyl chloride (6.47 g, 43 mmol). The mixture was stirred at room temperature overnight. Water was added and the organic phase was separated. The aqueous layer was extracted with EtOAc. The combined organic phase was dried over MgSO4 and concentrated. Chromatography on silica gel eluting with 3:1 EtOAc/hexanes provided the title compound (4.2 g, 42%) as an oil. MS calculated (M+H)+ 231. found 231.

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