PHTHALIC ANHYDRIDE COMPOUND HAVING ETHYNYL GROUP AND METHOD FOR PRODUCING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a phthalic anhydride compound having an ethynyl group and excellent in storage stability and a method for producing the compound.;SOLUTION: The compound is expressed by general formula (I) and has peak intensity of ≥6,000 cps in a Bragg angle (2θ) range of 26-28° by XRD diffraction pattern analysis. In the formula, R₁ is a substituent; n₁ is an integer of 0-3; when n₁ is 2 or 3, multiple R₁ groups may be the same or different; R₂ is a hydrogen atom, an alkyl having hydroxy at an α position or a silyl residue substituted with alkyl or aryl.;COPYRIGHT: (C)2010,JPO&INPIT