R. Ballini et al., Observations on the alkylation of beta-acetalic carbanions: Monoalkylationversus dialkylation and elimination, TETRAHEDRON, 57(20), 2001, pp. 4461-4465
The reaction with methyl iodide and a base (t-BuOK) of 1,3-dioxolanes and 1
,3-dithiolanes substituted at the P-position with an electron-withdrawing s
ubstituent (EWG=-CO2Me, -SO2Ph, -SO2Ph-p-NO2, -SO2Ph-o-NO2) leads to mono-
or dialkylated or ring-opened products in good yield. (C) 2001 Elsevier Sci
ence Ltd. All rights reserved.