A Metal-Free, Aqueous and General Route to 1,5-Disubstituted-1,2,3-triazoles: ‘Reversed Regioisomeric’ 1,3-Dipolar Cycloaddition of Azides and Vinyl Sulfones - Dey, Santu; Datta, Dhrubajyoti; Pathak, Tanmaya (Synlett, 2011)