Triflic acid–catalyzed rearrangement of unalkylated benzene sulfonanilides
作者:Rebecca Newcomer、James McKee、Murray Zanger
DOI:10.1080/00397911.2016.1178776
日期:2016.6.2
demonstrated that alkylated benzene sulfonanilides undergo sulfuric acid (98%)–catalyzed rearrangement to alkylamino diaryl sulfones. Similar treatment of their unalkylated analogs typically leads only to hydrolysis. Surprisingly, when the unalkylated benzene sulfonanilides react with triflic acid, rearrangement to sulfones does occur. GRAPHICAL ABSTRACT