Intramolecular reductive amination strategy to the synthesis of (R)-N-Boc-2-hydroxymethylmorpholine, N-(3,4-dichlorobenzyl)(R)-2-hydroxymethylmorpholine, and (R)-2-benzylmorpholine
作者:Rajiv T. Sawant、Suresh B. Waghmode
DOI:10.1016/j.tet.2010.01.047
日期:2010.3
(R)-N-Boc-2-hydroxymethylmorpholine, N-(3,4-dichlorobenzyl)(R)-2-hydroxymethylmorpholine, and (R)-benzylmorpholine has been achieved by employing proline-catalyzed asymmetric α-aminooxylation of aldehyde and palladium-catalyzed intramolecular reductive amination of azido aldehyde as the key steps.
通过使用脯氨酸催化,已经实现了(R)-N -Boc-2-羟甲基吗啉,N-(3,4-二氯苄基)(R)-2-羟甲基吗啉和(R)-苄基吗啉的简明高产对映选择性合成。醛的不对称α-氨氧基化和钯催化的叠氮基醛的分子内还原胺化是关键步骤。