Abstract
Resorcinol was acylated by phenylacetyl chloride with a set of catalysts consisting of the montmorillonite-based K-series and their cation-exchanged forms. The selectivity of C-acylation over O-acylation could be significantly increased by an appropriate ion exchange and by a solvent-free reaction mode, resulting in a 60% preparative yield of 1-(2,4-dihydroxyphenyl)-2-phenyl-ethanone.
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Békássy, S., Farkas, J., Ágai, B. et al. Selectivity of C- versus O-acylation of diphenols by clay catalysts. I. Acylation of resorcinol with phenylacetyl chloride. Topics in Catalysis 13, 287–290 (2000). https://doi.org/10.1023/A:1009034300594
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DOI: https://doi.org/10.1023/A:1009034300594