Catalyst-Controlled Wacker-Type Oxidation of Protected Allylic Amines
作者:Brian W. Michel、Jessica R. McCombs、Andrea Winkler、Matthew S. Sigman
DOI:10.1002/anie.201004156
日期:——
contrary: Utilizing the [Pd(quinox)]–TBHP catalyst system, protectedallylicamines were oxidized with high selectivity for the methyl ketone product. This is contrary to the results obtained by the substrate‐controlled Tsuji–Wacker oxidation, which highlights the catalyst‐controlled system presented here (see scheme). A variety of N‐protecting groups undergo selective oxidation with high ketone selectivity
相反:利用 [Pd(quinox)]-TBHP 催化剂体系,受保护的烯丙胺被氧化,具有高选择性,生成甲基酮产物。这与通过底物控制的 Tsuji-Wacker 氧化获得的结果相反,这突出了此处介绍的催化剂控制系统(参见方案)。各种 N 保护基团以高酮选择性进行选择性氧化。TBHP=叔丁基过氧化氢。
Multifaceted catalysis approach to nitrile activation: direct synthesis of halogenated allyl amides from allylic alcohols
作者:Roy P. Lester、Jay J. Dunsford、Jason E. Camp
DOI:10.1039/c3ob41692e
日期:——
Allyl amides were synthesised from the reaction of allylalcohols and halogenated nitriles using a platinum multifaceted catalysis approach in which both the nucleophilic addition and subsequent [3,3]-sigmatropic rearrangement steps of the process were catalysed by the same complex. Additionally, 1H/13C1H} NMR and GC studies provided the first insights into the mechanism of this transformation.
使用铂多面催化方法从烯丙醇与卤化腈的反应中合成烯丙基酰胺,其中该过程的亲核加成和随后的[3,3]-σ重排步骤均由相同的配合物催化。此外,1 H / 13 C 1 H} NMR和GC研究提供了对该转化机理的初步见解。