Methylenecyclopropyl sulfones are not formed when the title chlorosulfones are treated with methanolic methoxide; instead 1-arylsulfonyl-2-methoxy-2-methylcyclopropanes are formed by an addition–cyclisation sequence involving intramolecular displacement of chloride and not methoxide as suggested by other workers.
S. M. Jeffery and C. J. M. Stirling, J. Chem. Soc., Perkin Trans. 2, 1993, 2163 DOI: 10.1039/P29930002163
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