A First Example Using o-Iodoxybenzoic Acid (IBX) in Combination with Tetraethylammonium Bromide (TEAB) for Ring Expansion of 1,3-Dithiolanes and 1,3-Dithianes - Shukla, Vidyanand G; Salgaonkar, Paresh D; Akamanchi, Krishnacharya G (Synlett, 2005)