Catalytic Intermolecular Linear Allylic C−H Amination via Heterobimetallic Catalysis
作者:Sean A. Reed、M. Christina White
DOI:10.1021/ja710206u
日期:2008.3.1
Streamlined routes to (E)-allylic carbamates that can be further elaborated to medicinally and biologically relevant allylic amines are also demonstrated. Valuable 15N-labeled allylic amines may be generated directly from allyl moieties at late stages of synthetic routes by using the readily available 15N-(methoxycarbonyl)-p-toluenesulfonamide nucleophile. Evidence is provided that this reaction proceeds
A new palladium-catalyzed highly regioselective allylic CâH amination of alkenes with NFSI in the presence of a catalytic amount of water was developed and successfully expanded to Selectfluor-mediated palladium-catalyzed aminations of alkenes with N-tosylcarbamates in water at room temperature.
Regio- and Stereoselective Allylic C–H Arylation with Electron-Deficient Arenes by 1,1′-Bi-2-naphthol–Palladium Cooperation
作者:Gang-Wei Wang、An-Xi Zhou、Shi-Xia Li、Shang-Dong Yang
DOI:10.1021/ol501247b
日期:2014.6.6
A palladium-catalyzedallylic C–H arylation reaction with electron-deficient arenes with high regio- and stereoselectivity is reported. This work represents the first successful use of 1,1′-bi-2-naphthol as the ancillary ligand in allylic C–H activation, which is the key factor for chemoselectivity. Furthermore, high selectivity allylic C–H acetoxylation and amination were also successfully achieved
Scope and Mechanism of Allylic C−H Amination of Terminal Alkenes by the Palladium/PhI(OPiv)<sub>2</sub> Catalyst System: Insights into the Effect of Naphthoquinone
作者:Guoyin Yin、Yichen Wu、Guosheng Liu
DOI:10.1021/ja1030936
日期:2010.9.1
highly efficient transformation of alkenes has been achieved by enhancing the reoxidation of palladium with the strong oxidant PhI(OPiv)(2). The present work also provides the first systematic analysis of the mechanism of the allylicC-H oxidative amination. It has been found that naphthoquinone (NQ) plays a vital role in promoting olefin coordination to the palladium catalyst: in the absence of NQ, the