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Synfacts 2005(0): 0082-0082  
DOI: 10.1055/s-2005-869884
Polymer-Supported Synthesis
© Georg Thieme Verlag Stuttgart · New York

Bulky Diarylammonium Arenesulfonates as Selective Esterification Catalysts

Contributor(s): Yasuhiro Uozumi, Jun-ichiro Sakamaki
K. Ishihara*, S. Nakagawa, A. Sakakura
Nagoya University, Japan
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Publication History

Publication Date:
20 July 2005 (online)

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Significance

Polymer-supported bulky diarylammonium arenesulfonate catalyst was found to promote the direct ester condensation reaction of 4-phenylbutyric acid with 1-octanol to give 1-octyl 4-phenylbutyrate in over 99% yield. The catalyst was readily recovered and reused by filtration. The recycling of the catalyst was repeated nine times during which no loss of catalytic activity was observed.