title: Cu- and Pd-catalyzed asymmetric one-pot tandem addition-cyclization reaction of 2-(2',3'-alkadienyl)-beta-keto esters, organic halides, and dibenzyl azodicarboxylate: an effective protocol for the enantioselective synthesis of pyrazolidine derivatives.
abstract: [reaction: see text] Optically active pyrazolidine derivatives have been constructed by the Cu- and Pd-catalyzed asymmetric one-pot tandem addition-cyclization reaction of 2-(2',3'-dienyl)-beta-ketoesters, organic halides, and dibenzyl azodicarboxylate. The absolute configurations of the final products depend on the structure of the ligand.
authors.affiliation: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, P R China.
authors.forename: Shengming
authors.initials: S
authors.lastname: Ma
authors.forename: Ning
authors.initials: N
authors.lastname: Jiao
authors.forename: Zilong
authors.initials: Z
authors.lastname: Zheng
authors.forename: Zhichao
authors.initials: Z
authors.lastname: Ma
authors.forename: Zhan
authors.initials: Z
authors.lastname: Lu
authors.forename: Longwu
authors.initials: L
authors.lastname: Ye
authors.forename: Youqian
authors.initials: Y
authors.lastname: Deng
authors.forename: Guofei
authors.initials: G
authors.lastname: Chen