反应详情

温度

0 °C

α,α-dimethylbenzylamine (27.0 g; 0.200 mole) was dissolved in toluene (200 ml), 10 % NaOH (200 ml) was added and the stirred mixture was cooled to 0°C. Bromopropionyl bromide (76.0 g; 0.352 mole) was added dropwise during 30 minutes while keeping the temperature below 10°C. Stirring was continued at room temperature for about 3 hours. The precipitated crystalline 2-bromo-N-(α,α-dimethylbenzyl)propionamide was filtered off, washed on the filter with cold toluene and dried in vacuo at 60°C. Yield: 45.2 g (83.8 %); m.p. 102°-103°C.

1. customthe temperature below 10°C
2. filtrationThe precipitated crystalline 2-bromo-N-(α,α-dimethylbenzyl)propionamide was filtered off
3. washwashed on the
4. filtrationfilter with cold toluene
5. customdried in vacuo at 60°C