Sodium hydride → (1-(((tert-Butyldimethylsilyl)oxy)methyl)cyclopropyl)methanol

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A solution of cyclopropane-1,1-diyldimethanol (3.7 g) dissolved in ethylene glycol dimethyl ether (50 mL) was treated with 60% sodium hydride (1.449 g) at 0° C. under nitrogen. The resulting mixture was stirred at 20° C. for 1 h, treated with tert-butylchlorodimethylsilane (5.46 g) and stirred at room temperature overnight. The reaction mixture was diluted with water (250 mL), and extracted with ethyl acetate (2×250 mL). The organic was dried (MgSO4), filtered and evaporated to afford crude product. The crude product was purified (SiO2 chromatography, elution 100% DCM). Pure fractions were evaporated to dryness to afford the subtitle compound (5.50 g) as an oil.

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