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  • Synthesis and spectral studies of methyl heterocylic systems 

    Doyle, Paul P. (Brock University, 1979-07-09)
    2-Carboxy-2?-methyldiphenyl sulfide was prepared by the Ullmann reaction and cyclodehydrated by sulfuric acid to afford 4-methylthioxanthone. 1-Methylthioxanthone was separated from the reaction mixture obtained upon ...