Application of triazine tripyrazole compound in anion detection
A technology of triazine tripyrazole and azine tripyrazole, which is applied in the field of anion detection, can solve the problems of unrecognized, unrecognized and the like, and achieves the effect of convenient and quick identification
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[0024] This embodiment provides a triazine tripyrazole compound with the following structural formula:
[0025]
[0026] Its preparation method comprises the following steps:
[0027] (1) 4-pyrazole boronic acid pinacol ester (10g, 51.5mmol) and 3,4-dihydro-2H-pyran (4.79g, 57mmol) in 25mL toluene solution with trifluoroacetic acid (591mg, 5.2mmol ) as a catalyst, heated and refluxed at 95°C for overnight reaction, and rotary evaporated to obtain 1-(tetrahydropyran-2-yl)-3-(4,4,5,5-tetramethyl-[1,3,2] Dioxin-2-yl)-1H-pyrazole (8.45 g, 19.6 mmol), 59% yield.
[0028] (2) Add 4-bromooxynil (1092mg, 6.0mmol) into a 50mL Slinky bottle, dissolve it with 15mL chloroform solution, slowly add trifluoromethanesulfonic acid (534μL, 2.0mmol) dropwise under ice bath, and Under protection, react at room temperature for 10-15 hours, and then react at 50°C for one day to obtain a white solid (950 mg, 1.74 mmol), namely 2,4,6-tris(4-bromo-phenyl)-1,3,5 - Triazine, yield 87%.
[0029] (...
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