SCHEDULED MAINTENANCE
The homolytic methylation of pyrimidine in aqueous solution has been investigated with three different radical sources: ButOOH–Fe2+, MeCO2H–S2O82––Ag+, and MeSOMe–H2O2–Fe2+. This last reagent, used for the first time in homolytic aromatic substitution, turned out to be the most efficient. The orientation of mono-and poly-methylated derivatives is discussed on the basis of polar effects.
C. Giordano, F. Minisci, V. Tortelli and E. Vismara, J. Chem. Soc., Perkin Trans. 2, 1984, 293 DOI: 10.1039/P29840000293
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