Solvent-free mechanochemical synthesis of phosphonium saltsElectronic supplementary information (ESI) available: X-ray diffraction patterns of 1. See http://www.rsc.org/suppdata/cc/b1/b111515d/
- 6 March 2002
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 7,p. 724-725
- https://doi.org/10.1039/b111515d
Abstract
Phosphonium salts have been prepared during high-energy ball-milling of triphenylphosphine with solid organic bromides; the reactions occur at ambient conditions without a solvent; in the case of 2-bromo-2-phenylacetophenone the reaction in a solution usually produces a mixture containing both the C-phosphorylated and O-phosphorylated compounds, while the solvent-free mechanically induced transformation results in the thermodynamically favorable C-phosphorylated product; the occurrence of the observed transformations during mechanical processing of solid reactants is confirmed by the solid-state 31P NMR spectroscopy and X-ray powder diffraction.Keywords
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