Potassium Phosphate, Tribasic → HCID 67283370, 화합물

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To a stirred suspension of 2-bromo-3-methoxycyclopent-2-enone (17.5 g, 91.6 mmol), 2,6-diethyl-4-methylphenyl boronic acid (26.4 g, 137 mmol) and freshly powdered potassium phosphate (38.9 g, 183 mmol) in anhydrous, degassed toluene (450 ml) under a nitrogen atmosphere are added palladium (II)acetate (0.411 g, 1.83 mmol) and 2-dicyclohexylphosphino-2′,6′-dimethoxybiphenyl (1.51 g, 3.67 mmol). The reaction mixture is heated at 90° C. for 6.5 hours and then allowed to cool to room temperature overnight. The reaction is diluted with water (400 ml) and extracted with ethyl acetate (3×150 ml). The combined organic extracts are washed with brine (50 ml), dried over anhydrous magnesium sulfate, filtered and the filtrate is evaporated to dryness under reduced pressure to give a brown oil. The crude product is purified by column chromatography on silica gel to give 2-(2,6-diethyl-4-methylphenyl)-3-methoxycyclopent-2-enone.

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