(Trimethylsilyl)imidazole → Trimethyl{[(2s)-1,1,2-trimethyl-3-(phenylsulfonyl)propyl]oxy}silane

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The compound of Example 10B (0.95 g, 3.9 mmol) was dissolved in 3 mL of dimethylformamide; 1 mL of 1-(trimethylsilyl)imidazole was added, and the resultant solution was stirred overnight at ambient temperature, then heated at 80° C. for 8 hours. The crude mixture was partitioned between ethyl acetate and water; the organic phase was washed with brine and dried over Na2SO4. The solvents were removed in vacuo, and the residue was purified by chromatography on an Analogix Intelliflash 280™, eluting with a gradient of 0% to 20% ethyl acetate in hexanes to provide the titled compound (1.18 g, 96%).

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