Preparation of phthalimide


Preparation of phthalimide phthalimide: In a three-necked flask fitted with thermometer, gas introduction tube, and wide outlet tube bent downward, 148 grams (1.0 mole) of pure phthalic anhydride is melted and heated to about 170°. At this temperature a rapid stream of ammonia is passed into the molten phthalic anhydride. The ammonia is completely absorbed and steam escapes, carrying with it some phthalic anhydride. Sublimed material which condenses in … Read more