Full Paper Holger Butenschön Corresponding Author holger.butenschoen@mbox.oci.uni-hannover.de Leibniz Universität Hannover, Institut für Organische Chemie, Schneiderberg 1B, 30167 Hannover, GERMANY Search for more papers by this author PDF ShareShare Abstract Ferrocenyl triflate ( 1 ) and 1,1’‐ferrocenediyl ditriflate ( 5 ) undergo single and double anionic thia‐Fries rearrangements at low temperatures in high yields with the latter forming exclusively the respective meso product.