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

Active Publication Date: 2020-06-02
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the existing reports, some compounds only have good recognition for halide ions, but for NO 3 - 、PO 4 3- , SO 4 2- unrecognizable
And in some cases, once the concentration of the anion to be tested is low, it cannot be identified

Method used

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  • Application of triazine tripyrazole compound in anion detection
  • Application of triazine tripyrazole compound in anion detection
  • Application of triazine tripyrazole compound in anion detection

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Embodiment 1

[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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Abstract

The invention provides an application of a triazine tripyrazole compound in anion detection, the triazine tripyrazole compound is 2, 4, 6-tri (4-(1H-pyrazole-4-yl) phenyl)-1, 3, 5-triazine, the chemical formula of the triazine tripyrazole compound is C30H21N9, and the structural formula of the triazine tripyrazole compound is shown as a formula (I); the negative ions are NO3 <->, Cl <->, PO4 < 3->, SO4 < 2-> or CF3COO <->. The triazine tripyrazole compound disclosed by the invention is based on a [N-H... N] bond between terminal pyrazoles; porous molecular crystals are formed through hydrogenbond self-assembly, the three-dimensional network structure and anions can generate hydrogen bond interaction, obvious response to NO3 <->, Cl <->, PO4 < 3->, SO4 < 2-> and CF3COO <-> anions is achieved, and the anions can be recognized more conveniently and rapidly.

Description

technical field [0001] The present invention relates to the field of anion detection, more specifically, relates to the application of a triazine tripyrazole compound in anion detection. Background technique [0002] Anion detection is of great significance in actual production and life. For example, the detection of chloride ion, nitrate ion or sulfate ion in drinking water. Nitrate is the most stable nitrogen compound among various forms of nitrogen-containing compounds in an aerobic environment. After human ingestion, nitrate is transformed into Poisoning occurs due to nitrite; a certain amount of sulfate can cause diarrhea. Another example is the detection of anions in sewage. For example, if the content of nitrate ions or phosphate ions is too much, it will easily cause eutrophication of the water body after discharge, resulting in an imbalance in the distribution of species in the water ecosystem, thereby affecting human survival. Although some cases ultimately requi...

Claims

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Application Information

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IPC IPC(8): G01N21/78G01N21/82
CPCG01N21/78G01N21/82
Inventor于澍燕张梦思童金
OwnerBEIJING UNIV OF TECH