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  • 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.
    Author: Ma S, Jiao N, Zheng Z, Ma Z, Lu Z, Ye L, Deng Y, Chen G.
    Journal: Org Lett; 2004 Jun 24; 6(13):2193-6. PubMed ID: 15200318.
    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.
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