ChemInform Abstract: Convenient Titanium(III)‐Catalyzed Synthesis of Cyclic Aminoketones and Pyrrolidinones—Development of a Formal [4 + 1] Cycloaddition. Issue 48 (26th November 2013) - Frey, Georg; Luu, Hieu‐Trinh; Bichovski, Plamen; Feurer, Markus; Streuff, Jan