Silicon disulphide and boron sulphide in the preparation of thiones and pyranthiones
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society C: Organic
- No. 16,p. 2192-2195
- https://doi.org/10.1039/j39690002192
Abstract
Silicon disulphide and boron sulphide can be used with advantage instead of phosphorus pentasulphide for converting non-enolisable ketones, 2-pyrones and 4-pyrones into the corresponding thiones. Of the three reagents, boron sulphide is the most active and is often effective at ordinary temperatures. A convenient synthesis of 3,4-benzocoumarin is noted.Keywords
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