Yuanhui Ma, Y. Zhang, Shangbin Jin
Dec 30, 2009
Citations
0
Influential Citations
17
Citations
Journal
Tetrahedron Letters
Abstract
A new class of C2-symmetric 3,3′-dialkoxy-2,2′-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.