反应详情

m.p. 151°-152° C., 20.0 g., was prepared as in Example 1 using 4-n-butoxybenzoyl chloride (prepared from 27.2 g. of 4-n-butoxybenzoic acid as in Example 6) in 200 ml. of ethylene dichloride, 6.5 g. of 1,7-heptanediamine, 200 ml. of 10% aqueous potassium hydroxide solution, 500 ml. of ethylene dichloride and recrystallization from ethanol using decolorizing charcoal.

1. customof ethylene dichloride and recrystallization from ethanol using