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Related Reactions
Gewald Reaction
Synthesis of indoles

Fischer Indole Synthesis

The conversion of aryl hydrazones to indoles; requires elevated temperatures and the addition of Brønsted or Lewis acids. Some interesting enhancements have been published recently; for example a milder conversion when N-trifluoroacetyl enehydrazines are used as substrates. (abstract).


Mechanism of the Fischer Indole Synthesis

  


Recent Literature


A Palladium-Catalyzed Strategy for the Preparation of Indoles: A Novel Entry into the Fischer Indole Synthesis
S. Wagaw, B. H. Yang, S. L. Buchwald, J. Am. Chem. Soc., 1998, 120, 6621-6622..


Thermal cyclization of N-trifluoracetyl enehydrazines under mild conditions: A novel entry into the Fischer indole synthesis
O. Miyata, Y. Kimura, K. Muroya, H. Hiramatsu, T. Naito, Tetrahedron Lett., 1999, 40, 3601-3604.