The preparation of enantiomerically pure cyclopropylalanine
摘要:
Single enantiomer cyclopropylalanine (>99.9% ee) and various derivatives were prepared using an asymmetric hydrogenation approach with a rhodium catalyst based on the methyl BoPhox(TM) ligand. N-Boc cyclopropylalanine benzyl ester was the preferred derivative, as this material is ripe for further selective reaction and can be recrystallized to >99.5%, enantiomeric excess. (C) 2003 Elsevier Ltd. All rights reserved.
The preparation of enantiomerically pure cyclopropylalanine
摘要:
Single enantiomer cyclopropylalanine (>99.9% ee) and various derivatives were prepared using an asymmetric hydrogenation approach with a rhodium catalyst based on the methyl BoPhox(TM) ligand. N-Boc cyclopropylalanine benzyl ester was the preferred derivative, as this material is ripe for further selective reaction and can be recrystallized to >99.5%, enantiomeric excess. (C) 2003 Elsevier Ltd. All rights reserved.