title: N-Heterocyclic carbene-catalyzed cyclocondensation of 2-aryl carboxylic acids and enones: highly enantioselective synthesis of δ-lactones.
abstract: The enantioselective N-heterocyclic carbene-catalyzed [4 + 2] cyclocondensation of 2-aryl carboxylic acids and enones was developed, affording the corresponding chiral δ-lactones in good yields with good diastereo- and high enantioselectivities.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. songye@iccas.ac.cn.
authors.forename: Jin-Tang
authors.initials: JT
authors.lastname: Cheng
authors.forename: Xiang-Yu
authors.initials: XY
authors.lastname: Chen
authors.forename: Song
authors.initials: S
authors.lastname: Ye