157131-00-5Relevant academic research and scientific papers
Asymmetric Diastereoselective Conjugate Additions of Lithium Amides to Chiral Naphthyloxazolines Leading to Novel β-Amino Acids
Shimano, Masanao,Meyers, A. I.
, p. 7445 - 7455 (1995)
The functionalization of the naphthalene ring system by a direct amination-alkylation reaction of chiral nonracemic naphthyloxazolines is described.Chiral 1-naphthyl- and 2-naphthyloxazoline were treated with a variety of lithium amides followed by several different electrophilic quenches.The solvent and additives were varied in order to achieve optimum conditions.The combination of HMPA and THF at -78 deg C gave the best yield with excellent stereoselectivity.The present methology provides a stereospecific synthesis of novel, nonracemic, rigid β-amino acides after hydrolytic removal of the chiral oxazoline.
