Silica-Supported Amine Catalysts for Carbon–Carbon Addition Reactions
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Basic catalysts for carbon–carbon addition reactions were synthesized by immobilization of amine species on silica supports. Tetraethylenepentamine was impregnated and immobilized on amorphous silica (SiO2) and SBA-15 using an epoxy resin. The basicity of the catalysts was determined by adsorption–desorption of CO2 and the degree of immobilization was evaluated by FTIR. The catalytic activity towards the Claisen condensation reaction of methyl benzoate and methyl ethyl ketone was evaluated by an in-situ FTIR micro-scale reactor. A mechanism is proposed to show that the catalysts promote the formation of β-diketone and methanol; the effects of the support and amine immobilization degree are discussed.
KeywordsBasic catalyst Claisen condensation Immobilization FTIR
This work was supported by the FirstEnergy Advanced Energy Research Center.
- 10.Shahbazi A, Younesi H, Badiei A (2011) Chem Eng J (Amsterdam, Neth) 168(2):505–518Google Scholar
- 17.Wildschut J, Melian-Cabrera I, Heeres HJ (2010) Appl Catal B 99(1–2):298–306Google Scholar
- 21.Parida KM, Rath D, Mol J (2009) Catal A Chem 310(1–2):93–100Google Scholar
- 32.Srikanth Chakravartula S, SSCC (2012) ChemSusChem. doi: 10.1002/cssc.201100662
- 33.McMurry J (2010) Organic chemistry, 8th edn. Brooks/Cole CENGAGE learning, BelmontGoogle Scholar
- 35.Colthup NB, Daly LH, Wiberley SE (1990) Introduction to infrared and Raman spectroscopy, 3rd edn. Elsevier Science, AmsterdamGoogle Scholar
- 36.Silverstein RM, Webster FX, Kiemle DJ (2005) Spectrometric identification of organic compounds, seventh edition. Wiley, New YorkGoogle Scholar