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

Iranian Journal of Catalysis

مقاله 2، دوره 2، شماره 4، اسفند 2012، صفحه 153-156   

نویسندگان

Asieh Yahyazadeh^{* 1}؛ Sara Hadesinea¹؛ Mohammad Saeed Daneshmandi²

¹Department of Chemistry, University of Guilan, P.O. Box 41335-1914, Rasht, I.R. Iran.

²Department of Electrical and Computer Engineering, University of Tehran, Tehran, Iran.

چکیده

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.

کلیدواژه‌ها

Silica sulfuric acid؛ Heterogeneous catalyst؛ Imidate؛ Amidine؛ Diaminomaleonitrile

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