Hydroxylamine Oxygen as Nucleophile in Palladium(0)- and Palladium(II)-Catalyzed Allylic Alkylation: A Novel Access to Isoxazolidines
作者:Pedro Merino、Giovanni Poli、Tomas Tejero、Vanni Mannucci、Guillaume Prestat、David Madec
DOI:10.1055/s-2007-973868
日期:2007.4
In search for novel heterocyclization processes, the intramolecular Pd-mediated allylic alkylation of homoallyl hydroxyl-amines is described. Depending on both the reaction conditions and the substrates, CIS- or TRANS-3-substituted-5-vinyl isoxazolidines are preferentially obtained. The corresponding starting materials for the cyclization step are readily obtained through cross-metathesis of the easily
在寻找新的杂环化过程中,描述了高烯丙基羟基胺的分子内 Pd 介导的烯丙基烷基化。根据反应条件和底物,优先获得 CIS-或 TRANS-3-取代的-5-乙烯基异恶唑烷。通过容易获得的未取代的高烯丙基羟胺的交叉复分解反应,很容易获得用于环化步骤的相应起始原料。