C sub(3-Symmetric chiral trisimidazoline: the role of a third imidazoline and its application to the nitro Michael reaction and the alpha -amination of beta -ketoesters)

We describe the necessity of the C sub(3-symmetry and the role of a third imidazoline of trisimidazoline 3, which was recently developed by us as a new entry of organocatalyst. The utility of 3 as a Broensted base catalyst in the nitro Michael reaction and the alpha -amination of beta -ketoesters wa...

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Veröffentlicht in:Tetrahedron 2011-07, Vol.67 (26), p.4862-4868
Hauptverfasser: Murai, Kenichi, Fukushima, Shunsuke, Nakamura, Akira, Shimura, Masato, Fujioka, Hiromichi
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Sprache:eng
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Zusammenfassung:We describe the necessity of the C sub(3-symmetry and the role of a third imidazoline of trisimidazoline 3, which was recently developed by us as a new entry of organocatalyst. The utility of 3 as a Broensted base catalyst in the nitro Michael reaction and the alpha -amination of beta -ketoesters was shown, and the recyclability of the catalyst was also demonstrated.)
ISSN:0040-4020
DOI:10.1016/j.tet.2011.05.005