Highly Enantioselective Mannich Reactions with α-Aryl Silyl Ketene Acetals and Imines
作者:Gregory T. Notte、Jenny M. Baxter Vu、James L. Leighton
DOI:10.1021/ol103096u
日期:2011.2.18
Mannich reactions with chiral silicon Lewis acid activated acylhydrazones and α-aryl silylketeneacetals and α-aryl,α-alkyl silylketeneimines proceed efficiently and with good to excellent levels of both diastereoselectivity and enantioselectivity. The reactions provide access to α-aryl,β-hydrazido esters and α-aryl,α-alkyl,β-hydrazido nitriles, which are valuable analogs of β-amino acids.