Reductive cleavage of NO bonds in hydroxylamines and hydroxamic acid derivatives using samarium diiodide
作者:Gary E. Keck、Travis T. Wager、Stanton F. McHardy
DOI:10.1016/s0040-4020(99)00486-x
日期:1999.10
An efficient process for the reductive cleavage of NO bonds using samarium diiodide is detailed for a variety of structural types to define the scope and limitations of the method. The reduction is shown to be compatible with base sensitive substrates such as trifluoroacetamide derivatives, which cannot be reduced satisfactorily using aluminum amalgam or sodium amalgam. Direct quenching of the reduction
针对各种结构类型,详细介绍了使用二碘化sa还原N = O键的有效方法,以定义该方法的范围和局限性。还原显示与碱敏感的底物如三氟乙酰胺衍生物相容,使用铝汞齐或钠汞齐不能令人满意地还原。已证明用酰化剂直接淬灭还原混合物可在一锅法中由N = O衍生物提供高收率的受保护胺。