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.
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
Palladium-Catalyzed Intermolecular Aerobic Oxidative Amination of Terminal Alkenes: Efficient Synthesis of Linear Allylamine Derivatives
作者:Guosheng Liu、Guoyin Yin、Liang Wu
DOI:10.1002/anie.200801009
日期:2008.6.9
Aerobic Linear Allylic C–H Amination: Overcoming Benzoquinone Inhibition
作者:Christopher C. Pattillo、Iulia I. Strambeanu、Pilar Calleja、Nicolaas A. Vermeulen、Tomokazu Mizuno、M. Christina White
DOI:10.1021/jacs.5b11294
日期:2016.2.3
linear allylic C-H amination reaction is reported under palladium(II)/bis-sulfoxide/Brønsted base catalysis. The reaction operates under preparative, operationally simple conditions (1 equiv of olefin, 1 atm O2 or air) with reduced Pd(II)/bis-sulfoxide catalyst loadings while providing higher turnovers and product yields than systems employing stoichiometric benzoquinone (BQ) as the terminal oxidant