Arylglycine aminoacids were obtained in good yields and with enantiomeric excesses higher than 99% by using an asymmetric amination reaction protocol on (S,S)-(+)-pseudoephedrine based arylacetamide enolates with di-tert-butylazodicarboxylate. Subsequent hydrazinolysis and hydrolysis yielded the target aminoacids.
通过在基于(S,S)-(+)-伪
麻黄碱的芳基乙酰胺烯酸酯和二叔丁基偶氮二
羧酸酯上使用不对称胺化反应方案,可以以高收率获得对映体过量,且对映体过量率高于99%。随后的
肼解和
水解产生目标
氨基酸。