Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Reexamination Certificate
2005-05-24
2005-05-24
Richter, Johann (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C558S418000
Reexamination Certificate
active
06897341
ABSTRACT:
A bis(aminostyryl)naphthalene compound represented by the general formula [I] or the like below.(where R2and R3each denotes an unsubstituted aryl group; R1and R4each denotes an aryl group having a specific substituent such as methoxy group; and R5and R6each denotes a cyano group or the like.)A process for producing a bis(aminostyryl)naphthalene compound represented by the general formula [I] by condensation of, for example, 4-(N,N-diarylamino)benzaldehyde with diphosphonic ester or diphosphonium.The bis(aminostyryl)naphthalene compound emits intense yellow or red light. The process permits efficient production of the bis(aminostyryl)naphthalene compound.
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Ichimura Mari
Ishibashi Tadashi
Tamura Shinichiro
Nwaonicha Chukwuma
Richter Johann
Sonnenschein Nath & Rosenthal LLP
Sony Corporation
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