反应详情

A solution containing 0.5 g of the product obtained in Example 19 and 0.38 g of 4-dimethylaminobenzaldehyde in 5 ml of methanol was saturated with gaseous hydrogen chloride. The solution was refluxed for 1 h. After cooling the product was filtered and washed with methanol. Yield 0.26 g (70%), decomp. on heating.

1. temperatureThe solution was refluxed for 1 h
2. temperatureAfter cooling the product
3. filtrationwas filtered
4. washwashed with methanol
5. temperatureon heating