title: Desymmetrization of cyclohexadienones via asymmetric Michael reaction catalyzed by cinchonine-derived urea.
abstract: Desymmetrization of cyclohexadienones bearing a bisphenylsulfonyl methylene group via asymmetric Michael reaction catalyzed by cinchonine-derived urea was realized to afford a series of highly enantioenriched polycyclic cyclohexenones in high yields and ee's.
authors.affiliation: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Gu
authors.forename: Shu-Li
authors.initials: SL
authors.lastname: You
mesh_terms: D002384:Catalysis; D002930:Cinchona Alkaloids / Q000737:chemistry*; D053138:Cyclohexenes / Q000737:chemistry*; D015394:Molecular Structure; D013237:Stereoisomerism; D014508:Urea / Q000737:chemistry*
chemical_list: D002930:Cinchona Alkaloids; D053138:Cyclohexenes; C507608:cyclohexadienone; D014508:Urea; C010086:cinchonine