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THE CHEMICAL ALTERATION OF A BACTERIAL SURFACE, WITH SPECIAL REFERENCE TO THE AGGLUTINATION OF B. PROTEUS OX-19

S S Cohen1

  • 1Eldridge Reeves Johnson Foundation for Medical Physics, The School of Medicine, University of Pennsylvania, and The Children's Hospital of Philadelphia, Philadelphia.

The Journal of Experimental Medicine
|October 30, 2009
PubMed

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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.