ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
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
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.
Chemical Papers 68 (4) 531–539 (2014)