Reaction of alpha-benzenesulfonylphenylacetic acid with alkyl halides. Decarboxylative alkylation vs. decarboxylative protonation - Wladislaw, Blanka; Perna, Fernando; Neves, Regina Maria de Almeida; Marzorati, Liliana; Di Vitta, Cláudio (Phosphorus, Sulfur, and Silicon and the Related Elements, 2004)