One-pot highly enantioselective catalytic Mannich-type reactions between aldehydes and stable α-amido sulfones: asymmetric synthesis of β-amino aldehydes and β-amino acids
作者:Luca Deiana、Gui-Ling Zhao、Pawel Dziedzic、Ramon Rios、Jan Vesely、Jesper Ekström、Armando Córdova
DOI:10.1016/j.tetlet.2009.10.130
日期:2010.1
A highly enantioselective catalytic route to carbamate- and benzoate-protected β-amino aldehydes and β-amino acids is presented. The amino acid-catalyzed one-pot asymmetric reaction between unmodified aldehydes and α-amido sulfones gives the corresponding β-amino compounds with up to 95:5 dr and 97–>99% ee.
提出了对氨基甲酸酯和苯甲酸酯保护的β-氨基醛和β-氨基酸的高度对映选择性催化途径。未经修饰的醛与α-酰胺基砜之间的氨基酸催化的一锅不对称反应可得到相应的β-氨基酸,其dr含量高达95:5,ee高达97-> 99%。