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Into a three-necked round-bottom flask (500 mL) equipped with a condenser were placed benzophenone (2, 8.1 g 44.5 mmol), NaH (60%, 2.2 g, 55 mmol) and benzene (80 mL) under nitrogen. The mixture was reflux for 10 min. Then, 4-bromophenylacetonitrile (1, 9.4 g, 48 mmol) in benzene (150 mL) was added dropwise over 1 h under reflux condition. Evolved H2 was observed at the oil bubbler and the reaction was lasted for another 20 h.Upon cooling to room temperature, 100mL of water was added to the mixture. The organic layer was collected and washed with brine three times. The organic phase was then dried over anhydrous Na2SO4 and concentrated under vacuum. Addition of methanol gave pale yellow crystals in 86% yield.

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