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Synthesis of 1,1-diacetates catalysed by silica-supported boron sulfonic acid under solvent-free conditions and ambient temperature

Sami Sajjadifar and Sobhan Rezayati

Department of Chemistry, Payame Noor University, 19395-4697, Tehran, Iran

 

E-mail: ss_sajjadifar@yahoo.com

Abstract: 1,1-Diacetates derivatives were prepared using the direct condensation of aldehydes with acetic anhydride in the presence of silica-supported boron sulfonic acid (SiO2/B(SO4H)3) as a tri-functional inorganic Brønsted acid catalyst under solvent-free conditions at ambient temperature. The salient features of this methodology are: (i) cheaper process ready availability of the catalyst; (ii) versatility; (iii) high regio-selectivity of the procedure and recyclable property of the catalyst.

Keywords: silica boron sulfonic acid – acylals – aldehydes – acetic anhydride – solvent free conditions

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-013-0480-z

 

Chemical Papers 68 (4) 531–539 (2014)

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