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Facile Preparation of 4-Substituted Quinazoline Derivatives
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Published on: February 15, 2016

Thiadiazoloquinoxalines: tuning physical properties through smart synthesis

Timea Dallos1, Manuel Hamburger, Martin Baumgarten

  • 1Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.

Organic Letters
|March 15, 2011
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.