Highly Diastereoselective Mannich-Type Reactions of Chiral <i>N</i>-Acylhydrazones
作者:Mikkel F. Jacobsen、Liviu Ionita、Troels Skrydstrup
DOI:10.1021/jo0358170
日期:2004.7.1
optimal reaction conditions entailed the simple use of ZnCl2 in acetonitrile at room temperature. Hydrazones derived from phenyl-, isopropyl-, and benzyl-substituted 2-oxazolidinones were examined in the reaction in terms of yield and diastereoselectivity. The facile SmI2-mediated N−N bond cleavage of the formed hydrazines was demonstrated yielding a β-amino acid derivative. Hence, the overall reaction