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Room Temperature Catalytic Aromatization of Hantzsch 1,4-Dihydropyridines by Sodium Nitrite in the Presence of Acidic Silica Gel

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Summary.

Various alkyl, aryl, and heterocyclic Hantzsch 1,4-dihydropyridines were converted to the corresponding pyridines in excellent yields and short times using sodium nitrite in the presence of a catalytic amount of acidic silica gel at room temperature.

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Authors and Affiliations

  1. Department of Chemistry, Sharif University of Technology, P.O. Box 11365-9516, Tehran, Iran

    Mohammed M. Hashemi, Hossein Ghafuri & Zahed Karimi-Jaberi

Authors
  1. Mohammed M. Hashemi
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  2. Hossein Ghafuri
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  3. Zahed Karimi-Jaberi
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Correspondence to Mohammed M. Hashemi.

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Hashemi, M., Ghafuri, H. & Karimi-Jaberi, Z. Room Temperature Catalytic Aromatization of Hantzsch 1,4-Dihydropyridines by Sodium Nitrite in the Presence of Acidic Silica Gel. Monatsh. Chem. 137, 197–200 (2006). https://doi.org/10.1007/s00706-005-0425-5

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  • DOI: https://doi.org/10.1007/s00706-005-0425-5

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