| abstract |
(57) [Problem] To provide a production method capable of obtaining a high purity phenylethynylphthalic anhydride derivative in an industrially efficient and high yield. An ethynylbenzene derivative and a halophthalic anhydride are reacted in an organic solvent in the presence of a catalyst and a dehalogenating agent, and then the organic solvent is distilled off, and then an aromatic hydrocarbon or A method for producing a phenylethynylphthalic anhydride derivative by a method of adding a halogenated aromatic hydrocarbon solvent, heating and dissolving, followed by hot filtration. |