Phthalic Anhydride → HCID 13827953, compound

Participants

Reaction Steps

In a 3 liter, round-bottom flask equipped with a heating mantle, mechanical stirrer, thermometer, nitrogen inlet and condenser, 137 gms (0.5 mole) of 2,3,5,6-tetrachloro-p-xylylenediamine was dissolved at room temperature in 1 liter N-methyl-2-pyrrolidone (NMP). While stirring, 150 gms (1.0 mole) solid phthalic anhydride was added, the temperature rising to 47° C. The resulting greenish solution was heated to 180°-185° C. for 30 minutes, after which period crystallization took place. The hot mixture was poured into a 2 liter beaker when mass crystallization occurred.

Provenance & Evidence