4,4'-bis(5-sulfo-8-hydroxyl-7-aminoquinoline azo)-3,5,3',5'-tetrabromo-diphenyl ether

A kind of technology of quinoline aminoazo group and tetrabromodiphenyl ether is applied in 4 fields, can solve the problems of few, coexisting ion interference and the like, and achieves the effects of low cost, high sensitivity and simple preparation method

Inactive Publication Date: 2009-12-16
SHANXI DATONG UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

Triazene reagent is an excellent chromogenic reagent for the photometric analysis of silver, mercury, cadmium, nickel and other metal ions. Because of its high sensitivity and easy synthesis, it is constantly attracting people's attention, but its coex

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  • 4,4'-bis(5-sulfo-8-hydroxyl-7-aminoquinoline azo)-3,5,3',5'-tetrabromo-diphenyl ether
  • 4,4'-bis(5-sulfo-8-hydroxyl-7-aminoquinoline azo)-3,5,3',5'-tetrabromo-diphenyl ether
  • 4,4'-bis(5-sulfo-8-hydroxyl-7-aminoquinoline azo)-3,5,3',5'-tetrabromo-diphenyl ether

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Embodiment 1

[0032] 4,4'-bis(5-sulfonic acid-8-hydroxy-7-quinolineaminoazo)-3,5,3',5'-tetrabromodiphenyl ether (BSHQAABBE), its molecular formula:

[0033]

[0034] The preparation method of 4,4'-bis(5-sulfonic acid group-8-hydroxyl-7-quinoline aminoazo)-3,5,3',5'-tetrabromodiphenyl ether comprises the following steps:

[0035] 1, the preparation of 5-sulfonic acid group-8-hydroxyquinoline

[0036] Slowly dissolve 7.25g (0.05mol) of 8-hydroxyquinoline (1) in 50g of fuming sulfuric acid (containing 4% SO 3 ) at 8°C for 24 hours, pour it into 800g of crushed ice to obtain a large amount of precipitate, filter it, wash it thoroughly with cold water, and recrystallize it with about 5% to 10% dilute hydrochloric acid to obtain a colorless needle-like crystal 5 -Sulfonic acid-8-hydroxyquinoline (2), melting point 322-323°C.

[0037] 2, Preparation of 5-sulfonic acid group-7-azobenzene-8-hydroxyquinoline

[0038] Dissolve 3.72g (0.04mol) of aniline in 30mL of dilute hydrochloric acid (1:1), c...

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Abstract

The invention relates to a bis-triazene compound, in particular to 4,4'-bis(5-sulfo-8-hydroxyl-7-aminoquinoline azo)-3,5,3',5'-tetrabromo-diphenyl ether, a method for preparing the same and application thereof. The molecular structure formula of the 4,4'-bis(5-sulfo-8-hydroxyl-7-aminoquinoline azo)-3,5,3',5'-tetrabromo-diphenyl ether is shown as the right. The preparation method comprises the following steps: preparation of 5-sulfo-8-hydroxyquinoline, preparation of 5-sulfo-7-azobenzene-8-hydroxyquinoline, preparation of 5-sulfo-7-amino-8-hydroxyquinoline, bromination of 4,4'-diaminodiphenyl ether and diazotization of 4,4'-diamino-3,5,3',5'-tetrabromo-diphenyl ether, and coupling. The method has the advantages of simple method and low cost; and when being used for detecting heavy metal ions, the method has the characteristics of good selectivity, high sensitivity and stable performance.

Description

technical field [0001] The present invention relates to a bistriazene compound, specifically 4,4'-bis(5-sulfonic acid group-8-hydroxyl-7-quinoline aminoazo)-3,5,3',5'- Tetrabromodiphenyl ether and its preparation method and application. Background technique [0002] Triazene reagents contain -N=N-NH-functional groups, due to p-π conjugation, It has strong acidity, and under alkaline conditions, it is easy to complex with transition metal ions after deprotonation, and is a good coordination group (Zhang, PF, Gao, H W, Li, Y.Talanta.1998, 47( 2): 355). Triazene reagent is an excellent chromogenic reagent for the photometric analysis of silver, mercury, cadmium, nickel and other metal ions. Because of its high sensitivity and easy synthesis, it is constantly attracting people's attention, but its coexisting ions interfere greatly. The sensitivity and sensitivity still need to be improved, and it is often only used as a chromogenic reagent for photometric analysis, and is ra...

Claims

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Application Information

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IPC IPC(8): C07D215/38G01N21/78G01N21/64
Inventor 孟双明王君玲张利解海冯锋
Owner SHANXI DATONG UNIV
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