SnTUD-1: a solid acid catalyst for three component coupling reactions at room temperature

Muthusamy Poomalai Pachamuthu; Kannan Shanthi; Rafael Luque; Anand Ramanathan

doi:10.1039/C3GC40792F

SnTUD-1: a solid acid catalyst for three component coupling reactions at room temperature

Muthusamy Poomalai Pachamuthu,^a Kannan Shanthi,^a Rafael Luque*^b and Anand Ramanathan*^c

Author affiliations

* Corresponding authors

^a Department of Chemistry, Anna University, Chennai, India

^b Departamento de Quimica Organica, Universidad de Cordoba, Campus de Rabanales, Edificio Marie Curie (C-3), Ctra Nnal IV-A, Km 396, 14014 Cordoba, Spain
E-mail: q62alsor@uco.es
Fax: +34 212066
Tel: +34 957211050

^c Center for Environmentally Beneficial Catalysis, The University of Kansas, Lawrence, USA
E-mail: anand@ku.edu
Fax: +1-785-864-6051
Tel: +1-785-864-1631

Abstract

A novel wormhole structured mesoporous material containing tin, SnTUD-1, was prepared by a direct hydrothermal synthesis method using triethanolamine (TEA) as an organic inexpensive mesoporous structure directing agent. XRD and N₂ sorption studies of SnTUD-1 confirmed the amorphous mesoporous nature of SnTUD-1, which possessed a large surface area of 555 m² g⁻¹ and a pore diameter of 7.4 nm. HR-TEM further ascertained the disordered pores in their morphology and the presence of nano-domains of SnO₂ species. The nature of the Sn⁴⁺ ion co-ordination with the silica matrix was evaluated by using different techniques including diffuse reflectance UV-Vis, FTIR, ²⁹Si MAS NMR and XPS. SnTUD-1 had an interesting Lewis acidity as measured by FTIR of pyridine adsorption which provided excellent activities in one-pot three-component Mannich-type reactions of ketones with aldehydes and amines at room temperature.

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Publication details

The article was received on 26 Apr 2013, accepted on 18 Jun 2013 and first published on 18 Jun 2013

Article type: Paper

DOI: 10.1039/C3GC40792F

Citation: Green Chem., 2013,15, 2158-2166

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SnTUD-1: a solid acid catalyst for three component coupling reactions at room temperature

M. P. Pachamuthu, K. Shanthi, R. Luque and A. Ramanathan, Green Chem., 2013, 15, 2158
DOI: 10.1039/C3GC40792F
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Green Chemistry

SnTUD-1: a solid acid catalyst for three component coupling reactions at room temperature

Abstract

Supplementary files

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SnTUD-1: a solid acid catalyst for three component coupling reactions at room temperature

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