(Trifluoromethyl)trimethylsilane → 1-(6-Chloropyridin-3-yl)-2,2,2-trifluoroethan-1-ol

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Reaction Steps

According to Reference Example 8-12, by use of 6-chloro-3-pyridinecarboxaldehyde (1.00 g, 7.06 mmol), (trifluoromethyl)trimethylsilane (1.25 mL, 8.48 mmol), tetrabutylammonium fluoride (a 1.0 mol/L solution in tetrahydrofuran, 706 μL, 0.706 mmol) and tetrahydrofuran (20 mL), the mixture was stirred and reacted at room temperature for 1 hour. Then, purification by silica gel column chromatography (chloroform/methanol=9/1) was performed to give 2-chloro-5-(2,2,2-trifluoro-1-hydroxyethyl)pyridine (Compound DC) (1.48 g, yield: 99%).

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