Cyanine compound and light filter using the same
A technology of compounds and filters, applied in the fields of filters, chemical instruments and methods, instruments, etc., can solve the problems of unsatisfactory light resistance, undocumented filter utilization, and inability to meet absorption characteristics.
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Embodiment 1-1
[0086] [Example 1-1] Production of iodide compound No.1
[0087]
[0088] Iodide-1-(4-ferrocenylbutyl)-2,3,3-trimethylindolium 5.27g (10mmol), iodide-1-ethyl-2-(2-phenyl A suspension of 3.6 g (10 mmol) of aminovinyl)thiazolium and 15.82 g of pyridine was stirred at room temperature, and 3.06 g (30 mmol) of acetic anhydride was added dropwise thereto. Then, it heated to 90 degreeC, and stirred at 90 degreeC for 4 hours. After cooling to 50° C., 33.3 g of water and 33.3 g of ethyl acetate were successively added dropwise, and left to cool to room temperature. Chloroform was added for oil-water separation. The organic phase was washed with water and dried over magnesium sulfate, and the solvent was distilled off under reduced pressure, and the obtained sticky solid was recrystallized from N,N'-dimethylformamide (DMF) / ethyl acetate. Dry under reduced pressure at 130° C. for 2 hours under vacuum to obtain 4.70 g of a red solid (yield: 71%).
Embodiment 1-2
[0089] [Example 1-2] Production of Hexafluorophosphate of Compound No.1
[0090] To a mixed solution of 2.66 g (4 mmol) of iodide of Compound No. 1 and 21.92 g of chloroform, an aqueous solution of 1.1 g (6 mmol) of potassium hexafluorophosphate was added, followed by stirring at room temperature. The aqueous phase was removed, and an aqueous solution of potassium hexafluorophosphate was added again. The organic phase was washed with water and dried over magnesium sulfate, and the solvent was distilled off under reduced pressure, and the obtained sticky solid was recrystallized from DMF / ethyl acetate. Dry under reduced pressure at 130° C. for 2 hours under vacuum to obtain 1.5 g of a red solid (55% yield).
Embodiment 1-3
[0091] [Example 1-3] Production of perchlorate of compound No.1
[0092] To a mixed solution of 1.33 g (2 mmol) of iodide of Compound No. 1 and 6.39 g of chloroform, an aqueous solution of 0.42 g (3 mmol) of sodium perchlorate was added, followed by stirring at room temperature. The aqueous phase was removed and aqueous sodium perchlorate was added again. The organic phase was washed with water and dried over magnesium sulfate, and the solvent was distilled off under reduced pressure, and the obtained sticky solid was recrystallized from chloroform / ethyl acetate. Dry under reduced pressure at 130° C. for 2 hours under vacuum to obtain 0.97 g of a red solid (yield: 76%).
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