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Issue 2, 2003
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Heterogeneous catalysis in the synthesis and reactivity of allantoin

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Abstract

The synthesis of allantoin from glyoxylic acid and urea has been studied using several heterogeneous catalysts. Organic resins and nanocomposites, particularly sulfonic resins, lead to higher yields than zeolites. Polymer morphology has a significant influence on the performance of the catalyst. The possibility of using the same type of solid acid in the reaction of allantoin with phenol has also been explored. However, this route requires a larger amount of acid and leads to lower para/ortho selectivity than the direct route from glyoxylic acid and urea.

Graphical abstract: Heterogeneous catalysis in the synthesis and reactivity of allantoin

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Publication details

The article was received on 17 Dec 2002 and first published on 20 Feb 2003


Article type: Paper
DOI: 10.1039/B212376B
Green Chem., 2003,5, 275-277

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    Heterogeneous catalysis in the synthesis and reactivity of allantoin

    C. Cativiela, J. M. Fraile, J. I. García, B. Lázaro, J. A. Mayoral and A. Pallarés, Green Chem., 2003, 5, 275
    DOI: 10.1039/B212376B

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