1-Bromoheptane → Heptylbenzene

Beteiligte Stoffe

Reaktionsschritte

A 50-ml four-necked flask was equipped with a stirrer, a thermometer, a dropping funnel and a reflux condenser. 0.045 g (0.2 mmol) of palladium (II) acetate and 2 ml of tetrahydrofuran were weighed in the flask, followed by stirring. Further, 0.096 g (0.2 mmol) of di-tert-butylmethylphosphonium tetraphenylborate obtained in Example B-1 was weighed in air and added into the flask. The flask was purged with argon, followed by stirring at 22° C. for 30 minutes. 3.582 g (20 mmol) of n-heptyl bromide was added, followed by stirring at 22° C. for 30 minutes. 10 ml (22 mmol) of 2.2M tetrahydrofuran solution of phenylmagnesium chloride was added dropwise at 30° C. over a period of 10 minutes, followed by stirring at 30° C. for 3 hours. After the completion of the reaction, 10 ml of saturated aqueous ammonium chloride solution was added, followed by separation. The organic phase was purified by column chromatography to afford 2.997 g of 1-phenylheptane (yield: 85 mol % based on n-heptyl bromide). The identification of the product was made by mass spectroscopy.

Herkunft & Nachweise