[CH3:1][C:2]([CH3:9])([CH2:6][CH2:7][OH:8])[CH2:3][CH2:4][OH:5].N1C=CN=C1.[C:15]([Si:19]([CH3:22])([CH3:21])Cl)([CH3:18])([CH3:17])[CH3:16].O>ClCCl>[C:15]([Si:19]([CH3:22])([CH3:21])[O:5][CH2:4][CH2:3][C:2]([CH3:9])([CH3:1])[CH2:6][CH2:7][OH:8])([CH3:18])([CH3:17])[CH3:16]A mixture of 3,3-dimethyl-pentane-1,5-diol (1.5 g, 11 mmol) and imidazole (1.4 g, 20 mmol) in dichloromethane (50 mL) was added tert-butyldimethylchlorosilane (1.7 g, 11 mmol). The reaction mixture was stirred at room temperature for 2 h. Water was added. The organic layer was separated, the aqueous layer was then extracted with dichloromethane. The combined organic layers were washed with brine, dried over MgSO4, concentrated to give 5-(tert-butyl-dimethyl-silanyloxy)-3,3-dimethyl-pentan-1-ol as a colorless oil (2.7 g, 100%).
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