| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5278303 | Tetrahedron Letters | 2009 | 4 Pages |
Abstract
A new class of C2-symmetric 3,3â²-dialkoxy-2,2â²-bipyrrolidines have been designed and developed for asymmetric organocatalytic Diels-Alder reactions of α,β-unsaturated aldehydes. The bipyrrolidines combined with HClO4 were found to be effective organocatalysts for enantioselective Diels-Alder reactions. The catalysis mode has been demonstrated by NMR and X-ray crystallographic studies for diiminium intermediate.
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Authors
Yuanhui Ma, Yong Jian Zhang, Shangbin Jin, Qiqi Li, Chenguang Li, Junseong Lee, Wanbin Zhang,