Total Synthesis of (+)-Ileabethoxazole. Studies of an Intramolecular Iron-Mediated Pauson–Khand [2+2+1] Carbocyclization

D. R. Williams and A. A. Shah, Total Synthesis of (+)-Ileabethoxazole.  Studies of an Intramolecular Iron-Mediated Pauson–Khand [2+2+1] Carbocyclization, J. Am. Chem. Soc. 2014, 136, 8829–8836.