| Literature DB >> 21786757 |
Grant S Buchanan1, Huifang Dai, Richard P Hsung, Aleksey I Gerasyuto, Casi M Scheinebeck.
Abstract
An enantioselective and diastereoselective aza-[3+3] annulation of pyrrolidine-based exo-cyclic vinylogous amides and urethanes with chiral vinyl iminium salts is described. This asymmetric annulation manifold is possible because of an unexpected regiochemical reversal whereby head-to-tail annulations dominated over the predicted head-to-head. It should find prevalent synthetic applications in the enantioselective synthesis of indolizidines.Entities:
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Year: 2011 PMID: 21786757 PMCID: PMC3155627 DOI: 10.1021/ol2017438
Source DB: PubMed Journal: Org Lett ISSN: 1523-7052 Impact factor: 6.005