| 摘要 |
PROBLEM TO BE SOLVED: To obtain a new compound which has the absorption maximum in the visible light region, is useful as a photosensitizer for photochemical polymerizations because of substantially absorbing the visible light, has the light-emitting maximum in the visible light region, and is useful for dye lasers and organic EL elements because of emitting visible light, when exited. SOLUTION: A compound of formula I or formula II (R1 to R4 are each an alkyl, an alkenyl or an aromatic hydrocarbon; R5 and R6 are each cyano, a halogenated alkyl or the like; R7 and R8 are each H, a halogen, an alkyl or the like; R9 to R11 are each H or an alkyl). For example, a compound of formula III. The compound of formula III is obtained, for example, by a method passing through a process for reacting a compound having a 4- dicyanomethylene-2-methyl-4H-pyran skeleton with a compound having a 3- formylcoumarin skeleton in the presence of a basic compound such as piperidine in a proper solvent (for example, N,N-dimethylformamide).
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