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[Spectrophotometric determination of deoxyribonucleic acid by its quenching effect on acridine orange]

Wen-Hui Si1, Yan-Qin Zi, Yi-Feng Tu

  • 1College of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215123, China.

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|May 16, 2008
PubMed

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Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

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The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.