Water → [3-[2-(4-Dibutylamino-2-methoxyphenyl)vinyl]-2-methoxy-5,5-dimethyl-2-cyclohexenylidene]acetonitrile

Participants

Reaction Conditions

Reaction Steps

To 0.18 g (7.5 mmol) of sodium hydride, 12 ml of tetrahydrofuran was added. To this mixture, 0.98 g (5.5 mmol) of diethyl cyanomethylphosphonate was added dropwise under ice cooling. To the mixture, 0.915 g (2.2 mmol) of 3-[2-(4-dibutylamino-2-methoxyphenyl)vinyl]-2-methoxy-5,5-dimethyl-2-cyclohexenone in tetrahydrofuran was added dropwise. After the mixture was stirred at 60° C. for 24 hours, water was added to the mixture and extraction with ethyl acetate was performed. The extract was washed with a saturated saline solution, dried over anhydrous sodium sulfate, and concentrated. The residue was purified by silica gel column chromatography to give 0.51 g of an orange oily matter (yield: 52.9%).

Provenance & Evidence