Tetrahedron Asymmetry p. 183 - 186 (1991)
Update date:2022-08-03
Topics:
Davies, Stephen G.
Ichihara, Osamu
Michael addition of the lithium amide derived from R-N-(α-methylbenzyl)benzylamine to benzyl E-crotonate is highly stereoselective (95percent d.e.) giving after debenzylation and crystallisation homochiral R-β-amino butanoic acid.A similar addition to methyl E-(p-benzyloxy)cinnamate is completely stereoselective giving after debenzylation and acid hydrolysis homochiral S-β-tyrosine as its HCl salt.
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