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Cyclodextrin-induced host-guest effects of classically prepared poly(NIPAM) bearing azo-dye end groups

Gero Maatz1, Arkadius Maciollek, Helmut Ritter

  • 1Institute of Organic Chemistry and Macromolecular Chemistry, Heinrich-Heine-University Duesseldorf, Universitaetsstraße 1, D-40225 Duesseldorf, Germany.

Beilstein Journal of Organic Chemistry
|December 5, 2012
PubMed

Keywords:
azo-dyecyclodextrinsend-group functionalizationhost–guest interactionsupramolecular aggregation

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Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

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.