%0 Journal Article %T Chiral bifunctional sulfide-catalyzed enantioselective bromolactonizations of α- and β-substituted 5-hexenoic acids. %A Sumida S %A Okuno K %A Mori T %A Furuya Y %A Shirakawa S %J Beilstein J Org Chem %V 20 %N 0 %D 2024 %M 39109297 %F 2.544 %R 10.3762/bjoc.20.158 %X Enantioselective halolactonizations of sterically less hindered alkenoic acid substrates without substituents on the carbon-carbon double bond have remained a formidable challenge. To address this limitation, we report herein the asymmetric bromolactonization of 5-hexenoic acid derivatives catalyzed by a BINOL-derived chiral bifunctional sulfide.