SCHEDULED MAINTENANCE
Thioesters are obtained in high yield by reactions of carboxylic acids with tris(ethylthio)borane in a refluxing solvent. The reaction pathway is complex, involving initial production of carboxylic anhydrides and oxybis(diacyloxy-boranes), which are separately attacked by liberated ethanethiol or the excess of tris(ethylthio)borane.
A. Pelter, T. E. Levitt, K. Smith and A. Jones, J. Chem. Soc., Perkin Trans. 1, 1977, 1672 DOI: 10.1039/P19770001672
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