Kinetics of the diazo coupling between 1-naphthol and diazotized sulfanilic acid

1990 ◽  
Vol 29 (9) ◽  
pp. 1761-1765 ◽  
Author(s):  
John R. Bourne ◽  
Oemer M. Kut ◽  
Joachim Lenzner ◽  
Horst Maire
Keyword(s):  
Sulfanilic Acid ◽  
Diazo Coupling ◽  
Kinetics Of

604. The kinetics of diazo-coupling and iodination of glyoxaline and some deuteroglyoxalines

1959 ◽  
pp. 3019 ◽  
Author(s):  
A. Grimison ◽  
J. H. Ridd
Keyword(s):  
Diazo Coupling ◽  
Kinetics Of

Kinetics and mechanism of diazo coupling. XV. Coupling kinetics of substituted benzenediazonium salts with acetone

1970 ◽  
Vol 35 (10) ◽  
pp. 2954-2964 ◽  
Author(s):  
V. Macháček ◽  
O. Macháčková ◽  
V. Štěrba
Keyword(s):  
Kinetics And Mechanism ◽  
Diazo Coupling ◽  
Kinetics Of

Kinetics and mechanism of diazo coupling. XVII. Coupling kinetics of substituted benzenediazonium cations with 1-naphthol and 1-naphthol-4-sulfonic acid

1970 ◽  
Vol 35 (11) ◽  
pp. 3287-3295 ◽  
Author(s):  
H. Kropáčová ◽  
J. Panchartek ◽  
V. Štěrba ◽  
K. Valter
Keyword(s):  
Sulfonic Acid ◽  
Kinetics And Mechanism ◽  
Diazo Coupling ◽  
Kinetics Of

scholarly journals Kinetics of Thermal Decomposition of 4-Carboxyl-2,6-Dinitrobenzenediazonium Ion (CDNBD)

2005 ◽  
Vol 88 (4) ◽  
pp. 1108-1113 ◽  
Author(s):  
Olakunle S Idowu ◽  
Abiola O Kolawole ◽  
Olajire A Adegoke ◽  
Yetunde T Kolade ◽  
Adedigbo A Fasanmade ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Acid Medium ◽  
Rate Constants ◽  
Half Life ◽  
Colorimetric Assay ◽  
Time Interval ◽  
Kinetics Of Thermal Decomposition ◽  
Diazo Coupling ◽  
Diazonium Ion ◽  
Kinetics Of

Abstract The kinetics of thermal decomposition of 4-carboxyl-2,6-dinitrobenzenediazonium ion (CDNBD), an arenediazonium ion newly developed as a derivatizing reagent for drug analysis, are described. The arenediazonium ion, in an optimized concentrated sulfuric acid/orthophosphoric acid medium, was incubated for various time intervals at 30°, 45°, 55°, 65°, 75°, and 85°C. The amount of ion left after each time interval was quantified selectively by colorimetric assay at 490 nm, using mefenamic acid as a model diazo-coupling component. The rate constants for the decomposition were determined graphically. An Arrhenius plot was used to delineate the dependence of the rate constant on temperature and to predict the half-life at 25°C and lower temperatures. The diazonium ion decomposed by first-order kinetics. The rate constants of decomposition, which increased progressively with temperature, were 3.18 ± 0.41 × 10−5, 1.19 ± 0.07 × 10−4, 4.87 ± 0.15 × 10−4, 12.88 ± 0.73 × 10−4, and 21.32 ± 2.74 × 10−4 (s−1) with corresponding half-lives of 363, 97.06, 23.72, 8.97, and 5.42 min at 30°, 45°, 55°, 65°, and 75°C, respectively. CDNBD is highly stable in concentrated acid medium, with half-life values of about 10 h, 10 days, and 7.3 months at 25°, 0°, and −20°C, respectively. The reagent stability profile shows that it could be readily adapted for routine applications in instrumental chemical analysis.

The Kinetics of the Diazo Coupling Reaction.

1952 ◽  
Vol 51 (2) ◽  
pp. 347-361 ◽  
Author(s):  
Hch. Zollinger
Keyword(s):  
Coupling Reaction ◽  
Diazo Coupling ◽  
Diazo Coupling Reaction ◽  
Kinetics Of
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