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US 5,597,925 AGranted
Method of producing oxadiazole compounds
AssigneeRicoh Company, Ltd.
InventorsMasafumi Ohta, Yohta Sakon, Toshihiko Takahashi, Chihaya Adachi, Kazukiyo Nagai
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Abstract
An electroluminescent device is composed of a negative electrode, a positive electrode, and an organic compound layer which is interposed between the negative electrode and the positive electrode and includes at least one oxadiazole compound with a plurality of aryl oxadiazole structures. Novel oxadiazole compounds for use in the electroluminescent device and a method of producing the oxadiazole compounds are disclosed.
Claims2
A method for producing an oxadiazole derivative represented by formula (VII):
- ##STR295## by reacting a compound represented by formula (VIII) with a compound or mixture of compounds represented by formula (IX):
- ##STR296## wherein Ar.sup.12 independently represents an alkyl group having 1 to 20 carbon atoms, an aromatic hydrocarbon ring or an aromatic heterocyclic ring, and X is a halogen atom.
Dependencies are inferred from the claim text.