817637-35-7Relevant academic research and scientific papers
Nitrile Ylides: Diastereoselective cycloadditions using chiral oxzolidinones without Lewis acid
Mukund P, Sibi,Soeta, Takahlro,Jasperse, Craig P.
supporting information; experimental part, p. 5366 - 5369 (2010/02/28)
"Chemical Equation Presented" Lewis acid complexation Is generally required for chiral-auxiliary-controlled stereoselectivity, and chiral Lewis acid catalysis Is frequently optimal for Introducing asymmetry. In this work, we show that nitrlle ylide cycloadditions to electron-poor acceptors attached to chiral auxiliaries proceed In high yield and stereoselectivity in the absence of Lewis acids. In contrast, chiral Lewis acids are Inferior In these cycloadditions.
The samarium(II)-mediated intermolecular couplings of ketones and β-alkoxyacrylates: A short asymmetric synthesis of an antifungal γ-butyrolactone
Kerrigan, Nessan J.,Upadhyay, Tejas,Procter, David J.
, p. 9087 - 9090 (2007/10/03)
The samarium(II) iodide-mediated coupling of ketones with β-alkoxyacrylates gives β-hydroxy-γ-butyrolactones in moderate yield. The process has been applied to the asymmetric synthesis of an antifungal, γ-butyrolactone natural product.
