Patent ID: 6096900
Filing Date: 2000-08-01
Classification: C07D

Abstract:
A method for the synthesis of a phthalimide or phthalimide mixture from an amic acid or amic acid mixture derived from reaction of at least one amine reactant and at least one anhydride reactant, comprising:heating the amic acid or amic acid mixture to a temperature at which it remains substantially solid in a solventless environment under reduced pressure, thereby essentially completing formation of a phthalimide or phthalimide mixture having the structure (II) ##STR8## wherein R.sup.1 is a mono-, di-, or trivalent organic radical; R.sup.2 and R.sup.3 are each independently halogen, nitro, nitroso, alkyl, aryl; m and n each independently have values between 0 and 4 inclusive; and q is 0, 1, or 2.