Abstract
The reaction with methyl iodide and a base ( t-BuOK) of 1,3-dioxolanes and 1,3-dithiolanes substituted at the β-position with an electron-withdrawing substituent (EWG=CO 2Me, SO 2Ph, SO 2Ph- p-NO 2, SO 2Ph- o-NO 2) leads to mono- or dialkylated or ring-opened products in good yield.
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