3,3′-bimorpholine derivatives as a new class of organocatalysts for asymmetric Michael addition

被引:140
作者
Mosse, Sarah [1 ]
Laars, Marju
Kriis, Kadri
Kanger, Tonis
Alexakis, Alexandre
机构
[1] Univ Geneva, Dept Organ Chem, CH-1211 Geneva 4, Switzerland
[2] Tallinn Univ Technol, Dept Chem, EE-12618 Tallinn, Estonia
关键词
D O I
10.1021/ol0607490
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
New N-alkyl-3,3 '-bimorpholine derivatives (iPBM) were revealed to be efficient organocatalysts for the asymmetric direct Michael addition of aldehydes to nitroolefins and a vinyl sulfone. In these transformations using iPBM, 1,4-adducts were afforded in high yields, with good to high levels of diastereo- and enantioselectivity. The stereochemical outcome of the reaction could be explained by an acyclic synclinal model.
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页码:2559 / 2562
页数:4
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