| Literature DB >> 19173659 |
Ichiro Koyama1, Takuya Kurahashi, Seijiro Matsubara.
Abstract
A nickel-catalyzed [4 + 2] cycloaddition reaction has been developed where enones react with alkynes to afford polysubstituted pyrans. A mechanistic rationale is proposed, implying oxa-nickela cycle formation by oxidative cyclization of nickel to enone, followed by alkyne insertion.Entities:
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Year: 2009 PMID： 19173659 DOI： 10.1021/ja807952r
Source DB: PubMed Journal: J Am Chem Soc ISSN： 0002-7863 Impact factor: 15.419