Graebe-Ullmann carbazole synthesis

What is Graebe-Ullmann carbazole synthesis?

The Graebe-Ullmann carbazole synthesis, also referred to as the Graebe-Ullmann synthesis, is a chemical process for creating carbazoles. This process involves treating 2-aminodiphenylamines with nitrous acid, which generates benzotriazoles that undergo thermal decomposition to produce carbazoles.

Graebe-Ullmann carbazole synthesis - general reaction scheme - Graebe-Ullmann synthesis
Graebe-Ullmann carbazole synthesis

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