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Double heterocyclic tri azene compound and its preparing method and use

A technology for heterocyclic triazenes and compounds, which is applied in the field of compounds containing biheterocyclic triazene structures and their preparation, and can solve problems that need to be improved, few fluorescence detection, and large interference of coexisting ions, and achieve stable performance , high sensitivity, low cost effect

Inactive Publication Date: 2006-01-04
SHANXI DATONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Triazene reagent is an excellent color developer for metal ions such as cadmium, mercury, copper, nickel, silver, etc., because of its high sensitivity and easy synthesis, it is constantly attracting people's attention, but its coexisting ions interfere greatly. The performance needs to be improved, and it is often only used as a chromogenic agent for photometric analysis, and rarely used as a coordination structure of a fluorescent reagent for the fluorescence detection of metal ions

Method used

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  • Double heterocyclic tri azene compound and its preparing method and use
  • Double heterocyclic tri azene compound and its preparing method and use

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) Add 3.0mL of concentrated hydrochloric acid to the flask, slowly add 10.0mL of aqueous solution dissolved with 0.7g of sodium nitrite under stirring at -15°C, and then dropwise add Suspension, and accelerated stirring, reacted for 30 minutes, so that the diazotization is complete, to obtain the diazonium salt solution;

[0016] (2) Dissolve 1.5g of 2-aminobenzothiazole in 10mL of ethanol, slowly add the above-mentioned diazonium salt solution under stirring at -15°C, adjust the pH to 7-8 with saturated sodium carbonate solution during this period, react for 2 hours, and statically Place overnight, filter with suction, wash with water and ethanol successively. The dried crude product was recrystallized twice with N,N-dimethylformamide:ethanol (2:3) to obtain brown-red pure product BBTAB.

[0017] The elemental analysis, infrared spectrum and nuclear magnetic resonance spectrum test are consistent with the target product.

Embodiment 2

[0019] Fluorescent detection of Cu(II) by the fluorescent reagent 1,3-bis(2-benzothiazolediazoamino)benzene (BBTAB) containing biheterocyclic triazene structure in alkaline medium in the presence of β-CD and its its application.

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Abstract

The present invention discloses 1, 3-bi (2-benzothiazolyl diazo amino) benzene (BBTAB) as one kind of diherocyclic triazene compound and its preparation process and application. The compound is prepared with m-phenylenediamine and through double diazonation and coupling with 2-amino benzothiazole. Inside alkali medium with beta-CD, the diherocyclic triazene structure of the reagent is compounded with copper ion to raise the rigidity of BBTAB and to strength the fluorescence obviously. Based on water has been said, new fluorescent analysis method of determining Cu (II) with BBTAB is established. Test on different water samples containing copper ion gives satisfactory results. In addition, BBTAB may be also used as developing agent.

Description

technical field [0001] The invention relates to a bistriazene compound, especially a compound containing a diheterocyclic triazene structure, a preparation method thereof, and an application thereof. Background technique [0002] After the triazene structure is deprotonated, it is easy to coordinate with transition metal ions and is a good coordination group (J.Barker, N.D.Cameron, M.Kilner, et al, J.Chem.Soc.Dalton Trans., 12( 1991) 3435.). Triazene reagent is an excellent color developer for metal ions such as cadmium, mercury, copper, nickel, silver, etc., because of its high sensitivity and easy synthesis, it is constantly attracting people's attention, but its coexisting ions interfere greatly. The performance needs to be improved, and it is often only used as a chromogenic agent for photometric analysis, and rarely used as a coordination structure of a fluorescent reagent for the fluorescence detection of metal ions. Bistriazene reagents are more sensitive than gener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D277/82C09K9/00G01N21/64G01N21/25
Inventor 冯锋廖雪明陈泽忠孟双明
Owner SHANXI DATONG UNIV
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