Catalysis in Green Chemistry and Engineering
Published 4 issues per year
ISSN Print: 2572-9896
ISSN Online: 2572-990X
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PEG SUPPORTED PROLINE AS A LIQUID-LIQUID BIPHASIC CATALYST IN KNOEVENAGEL CONDENSATION REACTIONS
Volume 1,
Issue 1, 2018,
pp. 1-11
DOI: 10.1615/.2017020760
ABSTRACT
Proline, generally used as a base catalyst for organic reactions, was modified by supporting on PEG (polyethylene glycol) and used as an acid catalyst. The supported material was applied as a nonaqueous biphasic catalytic system in the Knoevenagel condensation for the synthesis of α, β-unsaturated compounds under mild reaction conditions and the proposed mechanism was supported by kinetic studies. After completion of the reaction, the catalyst could be separated and reused by selective product extraction. The catalyst was characterized by techniques such as FT-IR, NMR, CHN, and TGA-DSC analysis.
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