Jump to main content
Jump to site search

Issue 29, 2013
Previous Article Next Article

Tungstic acid functionalized mesoporous SBA-15: A novel heterogeneous catalyst for facile one-pot synthesis of 2-amino-4H-chromenes in aqueous medium

Author affiliations

Abstract

A new highly ordered mesoporous tungstic acid functionalized SBA-15, TAFMC-1 has been synthesized via post-synthesis modification of mesoporous SBA-15 with (3-chloropropyl) triethoxysilane followed by substitution reaction of chlorine atom of the 3-chloropropyl group by tungstic acid group under refluxing conditions in n-hexane. The tungstic acid functionalized mesoporous silica material has been characterized by using small angle powder X-ray diffraction, N2 sorption, HR-TEM, FE-SEM, FT-IR and solid state MAS NMR studies. TAFMC-1 catalyzes the facile one-pot catalytic three-component condensation reaction of resorcinol, aromatic aldehyde and malononitrile for the synthesis of a diverse range of 2-amino-4H-chromenes in aqueous medium. This heterogeneous catalyst can be recycled very efficiently for six consecutive reaction cycles without significant loss of catalytic activity.

Graphical abstract: Tungstic acid functionalized mesoporous SBA-15: A novel heterogeneous catalyst for facile one-pot synthesis of 2-amino-4H-chromenes in aqueous medium

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 10 Apr 2013, accepted on 13 May 2013 and first published on 13 May 2013


Article type: Paper
DOI: 10.1039/C3DT50947H
Citation: Dalton Trans., 2013,42, 10515-10524
  •   Request permissions

    Tungstic acid functionalized mesoporous SBA-15: A novel heterogeneous catalyst for facile one-pot synthesis of 2-amino-4H-chromenes in aqueous medium

    S. K. Kundu, J. Mondal and A. Bhaumik, Dalton Trans., 2013, 42, 10515
    DOI: 10.1039/C3DT50947H

Search articles by author