Alpha-Trialkylsilyl amino acids: Preparations and applications

ORGN 88

Guodong Liu and Scott McN. Sieburth. Department of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, PA 19122
Asymmetric reverse-aza-Brook rearrangement of N-Boc-N-trialkylsilyl allylamine yields an enantiomerically enriched alpha-amino allylsilane. Oxidative cleavage of the alkene leads to a Boc-protected amino acid with the configuration of naturally occurring amino acids (L). Advancements in this methodolgy now makes it possible to readily prepare multi-gram quantities of the amino acid precursor in a single operation from the Boc-protected amine.