Carboxylic acid-grafted mesoporous material and its high catalytic activity in one-pot three-component coupling reaction
- Department of Materials Science, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032 (India)
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan (China)
A new carboxylic acid functionalized mesoporous organic polymer has been synthesized via in situ radical polymerization of divinylbenzene and acrylic acid using a mesoporous silica as a seed during the polymerization process under solvothermal conditions. The mesoporous material MPDVAA-1 has been thoroughly characterized employing powder XRD, solid state {sup 13}C cross polarization magic angle spinning-nuclear magnetic resonance, FT-IR spectroscopy, N{sub 2} sorption, HR-TEM, and NH{sub 3} temperature programmed desorption-thermal conductivity detector (TPD-TCD) analysis to understand its porosity, chemical environment, bonding, and surface properties. The mesoporous polymer was used as a catalyst for a three comp onent Biginelli condensation between various aldehydes, β-keto esters, and urea/thioureas to give 3,4-dihydropyrimidine-2(1H)-ones. The reactions were carried out under conventional heating as well as solvent-free microwave irradiation of solid components, and in both the cases, the mesoporous polymer MPDVAA-1 proved to be a powerful, robust, and reusable catalyst with high catalytic efficiency.
- OSTI ID:
- 22303410
- Journal Information:
- APL Materials, Vol. 2, Issue 11; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2166-532X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACRYLIC ACID
ALDEHYDES
CATALYSTS
DESORPTION
DIVINYLBENZENE
EFFICIENCY
FOURIER TRANSFORMATION
INFRARED SPECTRA
NANOSTRUCTURES
NUCLEAR MAGNETIC RESONANCE
ORGANIC POLYMERS
POLYMERIZATION
SILICA
SOLIDS
SURFACE PROPERTIES
THERMAL CONDUCTIVITY
THIOUREA
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION