| Literature DB >> 15901165 |
Qiang Gao1, Bao-Fu Zheng, Jin-Heng Li, Dan Yang.
Abstract
[reaction: see text]. We have discovered a Ni(II)-catalyzed Conia-ene reaction of 1,3-dicarbonyl compounds with alkynes. In the presence of Ni(acac)2 and Yb(OTf)3, various acetylenic 1,3-dicarbonyl compounds underwent Conia-ene reaction to give mono- and bicyclic olefinic cyclopentanes. A mechanism involving the enol-yne-Ni complex formation is proposed and supported by deuterium-labeling experiments.Entities:
Year: 2005 PMID: 15901165 DOI: 10.1021/ol050532q
Source DB: PubMed Journal: Org Lett ISSN: 1523-7052 Impact factor: 6.005