ChemInform Abstract: Bromenium‐Catalyzed Tandem Ring Opening/Cyclization of Vinylcyclopropanes and Vinylcyclobutanes: A Metal‐Free [3 + 2 + 1]/[4 + 2 + 1] Cascade for the Synthesis of Chiral Amidines and Computational Investigation. Issue 10 (7th March 2013)