Direct Aminoalkylation of α-Branched Aldehydes with in situ Generated Glycine Cation Equivalents
作者:Nikolaus Risch、Stefan Piper
DOI:10.1055/s-2004-829536
日期:——
The efficient synthesis of β-formyl-α-aminocarboxylates 4 by direct aminoalkylation of aldehydes with in situ generated ternary iminium salts from inexpensive starting materials is described. These compounds are easily transformed into α-amino-β,β-dialkyl-γ-butyrolactones 10 and a,a-dialkyl-β-dialkylamino-butane-1,4-diols 11 and can be used as versatile building blocks.
描述了通过醛的直接氨基烷基化与原位生成的三元亚胺盐从廉价起始材料中有效合成 β-甲酰基-α-氨基羧酸盐 4。这些化合物很容易转化为 α-氨基-β,β-二烷基-γ-丁内酯 10 和 a,α-二烷基-β-二烷基氨基-丁烷-1,4-二醇 11,可用作通用结构单元。