o-Benzenedisulfonimide as a Soft, Efficient, and Recyclable Catalyst for the Acylation of Alcohols, Phenols, and Thiols under Solvent-Free Conditions: Advantages and Limitations - Barbero, Margherita; Cadamuro, Silvano; Dughera, Stefano; Venturello, Paolo (Synthesis, 2008)