Iridium-catalyzed asymmetric cyclization of alkenoic acids leading to γ-lactonesElectronic supplementary information (ESI) available: Experimental procedures, compound characterization data. See DOI: 10.1039/c5cc05393e

Asymmetric cyclization of alkenoic acids was realized by the use of an iridium/chiral bisphosphine catalyst, giving high yields of the corresponding γ-lactones with good enantioselectivity. Asymmetric cyclization of alkenoic acids was realized by the use of an iridium/chiral bisphosphine catalyst, giving high yields of the corresponding γ-lactones with good enantioselectivity.