Enantioselective
Rhodium-Catalyzed Isomerization of 4‑Iminocrotonates: Asymmetric Synthesis of
a Unique Chiral Synthon
- Publication date
- Publisher
Abstract
An
enantioselective isomerization of 4-iminocrotonates catalyzed
by a rhodium(I)/phosphoramidite complex is described. This reaction
uses widely available amines to couple with 4-oxocrotonate to provide
a convenient access to a central chiral building block in good yield
and high enantioselectivity. Although the mechanism of this new transformation
remains unclear, both Rh and the phosphoramidite play a central role