Nitromethane → 3-Benzyloxy-trans-beta-nitrostyrene

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A mixture of 3-benzyloxy-benzaldehyde (5.16 g, 24.3 mmol) described in Manufacturing Example 61-1-1, nitromethane (2.16 mL, 48.6 mmol), ammonium acetate (2.81 g, 36.5 mmol) and acetic acid (50 mL) was stirred for 6 hours at 100° C. This mixture was cooled to room temperature, concentrated under a reduced pressure, and diluted with ethyl acetate. The organic layer was washed with water, dried over anhydrous magnesium sulfate, and filtered. The filtrate was concentrated under a reduced pressure, and the residue was purified by silica gel column chromatography (heptane:ethyl acetate=4:1-2:1-1:1) to obtain the title compound (5.50 g, 89%).

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