Reaction of β-keto sulfoxides with trimethylsilyl trifluoromethanesulfonate in the presence of diisopropylethylamine afforded the corresponding (1E,3E)-1-phenylthio-2-(trimethylsilyloxy)-1,3-diene derivatives which underwent hydrolysis to furnish 1-phenylthio-alk-3-en-2-one derivatives in high yields.
H. Kosugi, K. Hoshino and H. Uda, J. Chem. Soc., Chem. Commun., 1992, 560 DOI: 10.1039/C39920000560
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