1. Über Aromatische Sulfofluoride. II. Mitteilung
2. Journ. Chem. Soc., London 1934 46
3. THE PREPARATION AND PROPERTIES OF CERTAIN SULFOXIDES AND SULFONES
4. \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm C}_6 {\rm H}_5 \,.\,\,{\rm SO}_2 \,.\,\,{\rm CH}_3 + {\rm FSO}_2 \,.\,\,{\rm C}_6 {\rm H}_5 = {\rm C}_6 {\rm H}_5 \,.\,\,{\rm SO}_2 \,\,.\,\,{\rm CH}_2 \,.\,\,{\rm SO}_2 \,.\,\,{\rm C}_6 {\rm H}_5 $$\end{document}