ChemInform Abstract: Biphenyl‐Derived Phosphepines as Chiral Nucleophilic Catalysts: Enantioselective [4 + 1] Annulations to Form Functionalized Cyclopentenes. Issue 16 (April 2015) - Ziegler, Daniel T.; Riesgo, Lorena; Ikeda, Takuya; Fujiwara, Yuji; Fu, Gregory C.