Sodium borohydride → (4-[1,3]Dioxolan-2-yl-3-fluoro-phenyl)-methanol

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To a methanol solution (200 mL) of 4-[1,3]dioxolan-2-yl-3-fluoro-benzaldehyde (10 g, 50.9 mmol) described in Manufacturing Example 204-1-2 was added sodium borohydride (2.12 g, 56 mmol), which was stirred for 1 hour at room temperature. This mixture was partitioned into ethyl acetate and water. The organic layer was separated, washed with water, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under a reduced pressure, and the residue was purified by NH silica gel column chromatography (ethyl acetate:heptane=1:1) to obtain the title compound (2.44 g, 24%).

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