[CH2:1]([O:4][C:5](=[O:11])[CH2:6][C:7]([CH2:9][Cl:10])=[O:8])[CH2:2][CH3:3]>C(Cl)(Cl)Cl>[CH2:1]([O:4][C:5](=[O:11])[CH2:6][C@@H:7]([OH:8])[CH2:9][Cl:10])[CH2:2][CH3:3]The procedure of example 375 was repeated using n-propyl-4-chloroacetoacetate as the substrate to afford n-propyl-4-chloro-3(R)-hydroxybutyrate, [α]D23 +21.5° (c, 5.0, CHCl3).
Wird geladen…