Title:
NEW METHINE COMPOUND, ORGANIC ELECTROLUMINESCENT ELEMENT MATERIAL AND ORGANIC ELECTROLUMINESCENT ELEMENT USING THE SAME
Document Type and Number:
Japanese Patent JP3457176
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a new compound, a red-colored fluorescent compound of high color purity, and useful as e.g. an organic electroluminescent element material which is capable of high-luminance, highly efficient light emission by low-voltage driving, excellent in stability in repeated uses and capable of high-luminance, highly efficient light emission even if made by coating means.
SOLUTION: This new compound is shown by formula I [R1 to R9 and R are each H or a substituent; A is an aromatic ring-including heterocycle; X is O or S; L1 and L2 are each a (substituted) methine; (n) is 1 or 2], e.g. a compound of formula II. The compound of formula I is obtained, for example, in the case of the compound of formula II, by reaction between 2,6-dimethyl-γ- pyrone and 2-cyanomethyl benzoxazole in acetic anhydride under heating reflux to form a compound of formula III, which, in turn, is reacted with a compound of formula IV in ethanol in the presence of piperidine under heating reflux.
Inventors:
Hisashi Okada
Kiichi Yanagi
Kiichi Yanagi
Application Number:
JP9366598A
Publication Date:
October 14, 2003
Filing Date:
April 06, 1998
Export Citation:
Assignee:
Fuji Photo Film Co., Ltd.
International Classes:
H01L51/50; C07D405/06; C07D407/06; C07D417/06; C07D471/06; C09B23/00; C09K11/06; H05B33/14; H05B33/22; (IPC1-7): C09B23/00; C09K11/06; H05B33/14; H05B33/22
Domestic Patent References:
| JP63141068A | ||||
| JP1126655A | ||||
| JP62187301A | ||||
| JP62285489A | ||||
| JP61138666A | ||||
| JP61169832A | ||||
| JP61167940A | ||||
| JP621754A | ||||
| JP6284158A | ||||
| JP3209791A | ||||
| JP1183849A | ||||
| JP11106746A |
Other References:
【文献】国際公開99/40086(WO,A1)
Attorney, Agent or Firm:
Shohei Oguri (4 outside)