反应详情

温度

20 °C

Sodium hydride (50% suspension in oil, 1.2 g, 0.025 mol) is placed in 100 ml of dry 1.2-dimethoxyethane. The slurry is cooled to 20° C. and diethylcyanomethyl phosphonate (4.43 g, 0.025 mol) is added dropwise with stirring. After the addition, the solution is stirred at room temperature for 1 hour until gas evolution has ceased. To the yellow solution, maintained below 25° C., is added dropwise t-butyl(5-formylpentyl)carbamate (5.38 g, 0.025 mol). The solution is stirred at room temperature for 1 hour and refluxed for 0.5 hour. A large excess of water is added and the product t-butyl-(7-cyanohepten-6-yl)carbamate (3.63 g, 61%) is extracted with ether.

1. additionAfter the addition
2. stirringthe solution is stirred at room temperature for 1 hour until gas evolution
3. temperatureTo the yellow solution, maintained below 25° C.
4. stirringThe solution is stirred at room temperature for 1 hour
5. temperaturerefluxed for 0.5 hour
6. extractionthe product t-butyl-(7-cyanohepten-6-yl)carbamate (3.63 g, 61%) is extracted with ether