Asymmetric synthesis of α-amino acid derivatives via an electrophilic amination of chiral amide cuprates with Li t-butyl-N-tosyloxycarbamate
摘要:
The utility of lithium t-butyl-N-tosyloxycarbamate (LiBTOC) as a (+)NHBOC synthon in highly diastereoselective reactions with chiral cis-aminoindanol derived amide cuprates is described. The diastereoselectivities of these reactions ranged from 96% to greater than 99%. The subsequent transformation of these adducts to alpha-amino acids ir also described (C) 1997 Elsevier Science Ltd.
Asymmetric synthesis of α-amino acid derivatives via an electrophilic amination of chiral amide cuprates with Li t-butyl-N-tosyloxycarbamate
摘要:
The utility of lithium t-butyl-N-tosyloxycarbamate (LiBTOC) as a (+)NHBOC synthon in highly diastereoselective reactions with chiral cis-aminoindanol derived amide cuprates is described. The diastereoselectivities of these reactions ranged from 96% to greater than 99%. The subsequent transformation of these adducts to alpha-amino acids ir also described (C) 1997 Elsevier Science Ltd.