A novel imide-forming reaction is described in which 3-(dicyanomethylidene) phthalide (pseudoanhydride) reacts with amines at room temperature. The pseudoanhydride was synthesized by condensation of phthalic anhydride with malononitrile followed by treatment with phosphrous oxychloride.
A novel imide-forming reaction is described in which 3-(dicyanomethylidene) phthalide (pseudoanhydride) reacts with amines at room temperature. The pseudoanhydride was synthesized by condensation of phthalic anhydride with malononitrile followed by treatment with phosphrous oxychloride.