Convenient Synthesis of Enantiomerically Enriched β-Cyclopropylalaninol Derivatives by Kinetic Resolution via (-)-Sparteine-Mediated Deprotonation
作者:Thomas Hense、Dieter Hoppe
DOI:10.1055/s-1997-1382
日期:1997.12
The racemic mixture of the protected β-cyclopropylalaninol derivative 11 was subjected to asymmetric deprotonation by means of sec-butyllithium/(-)-sparteine, resulting in a preferential abstraction of the α-pro-S-H in (R)-11; (S)-11 remains untouched.