Dimethylformamide → 2-(4-Bromophenyl)-2-methylpropanenitrile

関与物質

反応手順

To a suspension of sodium hydride (60% dispersion in oil, 50 g, 1.25 m) in dry N,N-dimethylformamide (400 ml under nitrogen was added with stirring a solution of 4-bromophenylacetonitrile in N,N-dimethylformamide (400 ml) keeping the temperature between 30° and 40° C. A solution of iodomethane (213 g, 1.50 m) in N,N-dimethylformamide was then added gradually keeping the temperatue between 35° C. and the mixture then stirred at ambient temperature overnight. With ice cooling 2N aqueous hydrochloric acid (800 ml) was gradually added and then the mixture was diluted with water (1200 ml). The product was extracted with ether and the extract washed with water, saturated sodium bicarbonate, aqueous sodium sulphite, water again and finally brine. After drying and concentration on vacuo an orange oil was obtained which was distilled in vacuo to give the title compound as a colourless liquid (98.05 g, 87.5%) b.pt. 98°-100°/0.4 mm.

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