Synthesis of Benzopyrano[2,3-d]pyrimidines Using Silica-Bonded N-Propyldiethylenetriamine Sulfamic Acid (SPDTSA) As Heterogeneous Solid Acid Catalyst under Solvent-Free Conditions

Authors

Khodabakhsh Niknam Persian Gulf University

Nassim Borazjani Department of Chemistry, Faculty of Sciences Persian Gulf University

Abstract:

Silica-bonded N-propyldiethylenetriamine sulfamic acid (SPDTSA) is employed as a recyclable heterogeneous solid acid catalyst for the synthesis of benzopyrano[2,3-d]pyrimidines through one-pot condensation reaction of salicylaldehydes, malononitrile and secondary amines at room temperature under solvent-free conditions. SPDTSA showed much the same efficiency when used in consecutive reaction runs.

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Journal title

Organic Chemistry Research

volume 1 issue 1

pages 78- 86

publication date 2015-09-01

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Keywords

Benzopyrano[2 3-d]pyrimidines Heterogeneous catalysts Solid acids Synthesis Solvent-free conditions

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