Y. Sugimoto et al., Diastereoselective allylation of a chiral imine with allylzinc reagents: Diastereoselective synthesis of a novel broad spectrum carbapenem, SYNLETT, (11), 2001, pp. 1747-1750
Diastereoselective allylation of chiral imine with allyl-metal reagents was
applied to prepare P-amino acid derivative as a key intermediate for the s
ynthesis of a novel carbapenem 1. Combination of the allylzinc: reagents an
d chiral imine, which was derived from L-valine methyl ester as a chiral au
xiliary afforded a homoallylamine in good yield with excellent diastereosel
ectivity.