Wednesday, April 22, 2020

FISCHER INDOLE SYNTHESIS

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




Aryl Hydrazide beyond as Surrogate of Aryl Hydrazine in the Fischer Indolization: The Synthesis of N-Cbz-indoles, N-Cbz-carbazoles, and N,N'-Bis-Cbz-pyrrolo[2,3-f]indoles




Fischer Indole Synthesis in Low Melting Mixtures




From Alcohols to Indoles: A Tandem Ru Catalyzed Hydrogen-Transfer Fischer Indole Synthesis




Three- and Four-Component Syntheses of 3-Arylmethylindoles by Microwave-Assisted One-Pot Heck Isomerization-Fischer Indolization (Alkylation) (HIFI and HIFIA) Sequences




Efficient Preparation of Polyfunctional Indoles via a Zinc Organometallic Variation of the Fischer Indole Synthesis




A Palladium-Catalyzed Strategy for the Preparation of Indoles: A Novel Entry into the Fischer Indole Synthesis




The Benzyne Fischer-Indole Reaction





Thermal cyclization of N-trifluoracetyl enehydrazines under mild conditions: A novel entry into the Fischer indole synthesis

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