Selectivity Enhancement in the Rh(II)-Catalyzed Cyclopropanation of Styrene with (Silanyloxyvinyl)diazoacetates

Paul Müller, Gérald Bernardinelli, Yves Allenbach, Maria Ferri, H. D. Flack

Organic Letters · 2004 · 79 citations · 9 references

Concepts

Abstract

The cyclopropanation of styrene with (silanyloxyvinyl)diazoacetates proceeds with exceptional diastereo- and enantioselectivity in the presence of chiral Rh(II) catalysts. 1,8-Naphthoyl-protected amino acids are the most effective Rh(II) ligands for these transformations. [reaction--see text]

References

9