Chiral oxazolidinones as electrophiles: intramolecular cyclization reactions with carbanions and preparation of functionalized lactams
作者:Sarah Gibson、Hollie K. Jacobs、Aravamudan S. Gopalan
DOI:10.1016/j.tetlet.2010.12.062
日期:2011.2
The intramolecular cyclizations of oxazolidinones with carbanions adjacent to sulfones, sulfoxides, and phosphonates proceed in high yields to obtain functionalized γ and δ lactams. The chiral oxazolidinone precursors can be readily synthesized from commercial amino acids. The lactams from this study are useful synthetic intermediates, as demonstrated by the synthesis of a precursor for levetiracetam