Synthesis of highly functionalized 1,6-dihydropyridines via the Zn(OTf)2-catalyzed three-component cascade reaction of aldimines and two alkynes (IA2-coupling)

文献情報

出版日 2018-04-04

DOI 10.1039/C8OB00195B

インパクトファクター 3.876

著者

Syeda Aaliya Shehzadi, Christophe M. L. Vande Velde, Aamer Saeed, Kourosch Abbaspour Tehrani

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要旨

A zinc(II) triflate catalyzed three component synthesis of 1,6-dihydropyridines, involving aldimines, alkynes and electron-deficient dimethyl acetylenedicarboxylate (DMAD), in good to excellent yields has been described. Besides a range of different N-substituents, a variety of both aromatic and aliphatic alkynes could be used. The application of electron-deficient propiolates instead of DMAD resulted in regiospecific incorporation of the ester functionality on the 1,6-dihydropyridine ring. The reaction proceeds via a cascade reaction involving nucleophilic addition of the metal acetylide to the imine, followed by the addition of the intermediately formed propargylic amine to the electron-deficient alkyne and subsequent 6-endo dig cyclization.

掲載誌

Organic & Biomolecular Chemistry

CiteScore: 3.4

自己引用率: 10.3%

年間論文数: 1041

Organic & Biomolecular Chemistry (OBC) publishes original and high impact research and reviews in organic chemistry. We welcome research that shows new or significantly improved protocols or methodologies in total synthesis, synthetic methodology or physical and theoretical organic chemistry as well as research that shows a significant advance in the organic chemistry or molecular design aspects of chemical biology, catalysis, supramolecular and macromolecular chemistry, theoretical chemistry, mechanism-oriented physical organic chemistry, medicinal chemistry or natural products. Articles published in the journal should report new work which makes a highly-significant impact in the field. Routine and incremental work is generally not suitable for publication in the journal. More details about key areas of our scope are below. In all cases authors should include in their article clear rationale for why their research has been carried out.

Synthesis of highly functionalized 1,6-dihydropyridines via the Zn(OTf)2-catalyzed three-component cascade reaction of aldimines and two alkynes (IA2-coupling)

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Organic & Biomolecular Chemistry

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