Question

Mechanism of synthesis of the benzamide

Answer 1

Explanation:

Alternatively benzamide could be prepared by mixing 3 g (or 3 ml) of benzonitrile with 50 ml of 10% hydrogen peroxide and 1 ml of 10% aqueous sodium hydroxide solution. The solution is gently warmed, with proper stirring, to 40° until the oily suspension of the benzonitrile has been completely replaced by the crystalline benzamide. When the reaction is complete, usually after 45-60 minutes, the solution is cooled, benzamide filtered, washed with water and recrystallized from hot water. The yield of benzamide is 2-2.5.