Silica-bonded n-propyltriethylene-tetramine as a recyclable solid base catalyst for the synthesis of 2-amino-5-oxo-5,6,7,8-tetrahydro-4H-chromenes

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  • Marzieh Makvandi1,
  • Fatemeh Abiar Dil1,
  • Ameneh Malekzadeh1,
  • Mojtaba Baghernejad2,
  • Khodabakhsh Niknam3,
  1. Department of Chemistry, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran.
  2. Young and Reasearcers Elite, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran
  3. Department of Chemistry, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran.

Published in Issue 2024-02-03

How to Cite

Makvandi, M., Abiar Dil, F., Malekzadeh, A., Baghernejad, M., & Niknam, K. (2024). Silica-bonded n-propyltriethylene-tetramine as a recyclable solid base catalyst for the synthesis of 2-amino-5-oxo-5,6,7,8-tetrahydro-4H-chromenes. Iranian Journal of Catalysis, 3(4). https://oiccpress.com/ijc/article/view/3777

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Abstract

Silica-bonded n-propyltriethylene-tetramine (SBNPTT) was found as an efficient solid base for the synthesis of 2-amino-5-oxo-5,6,7,8-tetrahydro-4H-chromenes. Chromene derivatives were obtained via the three-component condensation reaction of aromatic aldehydes, malononitrile, and dimedone at 80 oC under solvent-free conditions. The heterogeneous solid base showed much the same efficiency when used in consecutive reaction runs.

Keywords

  • Catalyst,
  • Chromenes,
  • Silica-bonded n-propyltriethylene-tetramine,
  • Solid bases,
  • Synthesis
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