Liebigs Annalen der Chemie

Herstellung von α??verzweigten Phenylalaninen und von 1, 1??disubstituierten Ethylendiaminen über chirale Imidazolidinone und Oxazolidinone aus Glycin– …

D Seebach, T Gees, F Schuler

Index: Seebach, Dieter; Gees, Thomas; Schuler, Franz Liebigs Annalen der Chemie, 1993 , # 7 p. 785 - 800

Full Text: HTML

Citation Number: 23

Abstract

B), various a-branched phenylalanines (C) were required. Geminal dialkylation of the chiral glycine building block Boc-BMI (1) occurs in excellent yields and selectivities and can be carried out in a one-pot procedure (products 2-10). However, phenylalanines with methoxy groups on the benzene ring and a-branching by substituents larger than methyl cannot be set free by hydrolysis of the corresponding imidazolidinones, which, on the other hand can ...