反应详情

A mixture of 5.9 g. of p-aminobenzonitrile and 9.5 g. of p-n-hexylbenzaldehyde in 100 ml. of benzene is treated with 150 mg. of p-toluenesulfonic acid and reacted as described in Example 1. After evaporation, there remain 14.4 g. of a brownish oil which crystallizes with cooling. Purification is carried out by several recrystallizations from isopropanol as described in Example 1. The p-[(p-n-hexylbenzyliden)amino]benzonitrile which is obtained has a melting point of 32.2°-33.0° C. and a clearing point of 64.5° C. UV (ethanol): ε281 = 23500 (shoulder at 310 nm). The nuclear magnetic resonance, mass spectrum, infrared and microanalysis data confirm the structure.

1. additionA mixture of 5.9 g
2. customAfter evaporation, there
3. customof a brownish oil which crystallizes
4. temperaturewith cooling
5. customPurification
6. customis carried out by several recrystallizations from isopropanol