| 摘要 |
PROBLEM TO BE SOLVED: To prepare an organic luminescent element material suitable for producing luminescent elements having high brightness by employing a specific compound (or its precursor), or a homopolymer or copolymer respectively obtained from monomer units derivatized from the compound. SOLUTION: An organic luminescent element is prepared by employing a 1,2,4-oxazole compound of formula I (R1 and R2 are each H, an alkyl, an alkenyl, an alkynyl, an aryl or a hetero ring) (e.g. a compound of formula II) or its precursor, or a homopolymer or copolymer respectively obtained from monomer units derivatized from the compound. The compound is obtained e.g. by thermally reacting an aliphatic or aromatic nitrile with excess hydroxylamine in a mixed solvent of an alcohol and water and by dissociating the resultant amidoxime in and absolute alcohol solvent in the presence of a base (e.g. a metal alkoxamide), followed by the reaction with an ester, an acid halide or an acid anhydride.
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