Silica sulfuric acid as an efficient and reusable heterogeneous catalyst for the synthesis of formamidines from the diaminomaleonitrile

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  • Asieh Yahyazadeh1,
  • Sara Hadesinea1,
  • Mohammad Saeed Daneshmandi2,
  1. Department of Chemistry, University of Guilan, P.O. Box 41335-1914, Rasht, I.R. Iran.
  2. Department of Electrical and Computer Engineering, University of Tehran, Tehran, Iran.

Published in Issue 2024-02-03

How to Cite

Yahyazadeh, A., Hadesinea, S., & Daneshmandi, M. S. (2024). Silica sulfuric acid as an efficient and reusable heterogeneous catalyst for the synthesis of formamidines from the diaminomaleonitrile. Iranian Journal of Catalysis, 2(4). https://oiccpress.com/ijc/article/view/3738

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Abstract

Silica sulfuric acid as an efficient and reusable heterogeneous catalyst has been used for the preparation of amidines 2 from formimidate 1 by reaction with aromatic amines at room temperature in good to excellent yields. Imidate was prepared by treatment of equimolar quantities of triethyl orthoformate and diaminomaleonitrile in refluxing dioxane. All the compounds were characterized fully by spectroscopic techniques.

Keywords

  • Amidine,
  • Diaminomaleonitrile.,
  • Heterogeneous catalyst,
  • Imidate,
  • Silica sulfuric acid
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