反应详情

The crude product of the title compound was synthesized by conducting the similar reaction to that mentioned in Example 23 (23d) using isopropyltriphenylphosphonium iodide (5.4 g, 12.6 mmol), potassium t-butoxide (1.5 g, 13.5 mmol) and 4-bromo-2-chlorobenzaldehyde (2.0 g, 9.0 mmol) that was obtained in Example 24 (24f). Subsequently, the crude product of the title compound thus obtained was purified by chromatography on a silica gel column using a mixed solvent of ethyl acetate and hexane (0:10 to 6:94) as the eluent to afford the title compound (2.1 g) in a yield of 94% as a colourless oily product.

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