Synlett 2024; 35(09): 1007-1010
DOI: 10.1055/s-0042-1751546
cluster
Chemical Synthesis and Catalysis in Germany

Synthesis of New Highly Functionalized Quinolines via a Novel FeIII-Catalyzed Domino aza-Michael/Aldol/Aromatization Reaction

Felix Heckmann
a   Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
,
Mohammad M. Ibrahim
a   Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
b   Department of Chemistry, Faculty of Science, University of Al al-Bayt, P. O. Box 130040, 25113 Al-Mafraq, Jordan
,
Frank Hampel
a   Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
,
a   Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Nikolaus-Fiebiger-Straße 10, 91058 Erlangen, Germany
› Author Affiliations
We gratefully acknowledge financial support from the Deutsche Forschungsgemeinschaft (DFG, grant no. TS 87/28-1 for S.B.T.).


Abstract

We report the development of a straightforward, waste-reducing, environmentally friendly, FeIII-catalyzed domino aza-Michael/aldol/aromatization reaction in the presence of water to access high-value functionalized quinolines by using 2-aminobenzophenones and ethyl buta-2,3-dienoate as starting compounds. The tangible advantages, that is, the utilization of commercially available and/or easily accessible substrates, simplicity, mild reaction conditions, and application of water as a solvent, make this three-step domino process green and highly appealing for the direct construction of a wide variety of highly functionalized quinolines in up to 78% yield.

Supporting Information



Publication History

Received: 10 October 2023

Accepted after revision: 11 December 2023

Article published online:
24 January 2024

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