Versatile Pyrrole Synthesis through Ruthenium(II)-Catalyzed Alkene C–H Bond Functionalization on Enamines
作者:Lianhui Wang、Lutz Ackermann
DOI:10.1021/ol303224e
日期:2013.1.4
An efficient ruthenium(II) catalyst enabled broadly applicable oxidative alkyne annulations with electron-rich enamines to provide diversely decorated pyrroles, even in an aerobic fashion with air as the ideal oxidant.
Pyrrole Synthesis via Allylic sp<sup>3</sup> C−H Activation of Enamines Followed by Intermolecular Coupling with Unactivated Alkynes
作者:Souvik Rakshit、Frederic W. Patureau、Frank Glorius
DOI:10.1021/ja104305s
日期:2010.7.21
A conceptually novel pyrrole synthesis is reported, efficiently merging enamines and (unactivated) alkynes under oxidative conditions. In an intermolecular Rh catalyzed process, the challenging allylic sp(3) C-H activation of the enamine substrates is followed by the cyclization with the alkyne (R(3) = CO(2)R). Alternatively, in some cases (R(3) = CN), the enamine can be utilized for a vinylic sp(2)
On the selectivity in some Rh(III) catalyzed CH activation cross-couplings
作者:Frederic William Patureau、Tatiana Besset、Roland Fröhlich、Frank Glorius
DOI:10.1016/j.crci.2012.08.003
日期:2012.11
Abstract In the last few years, Rh(III)-catalyzed C H functionalizations have made tremendous progress and, consequently, have recently received increasing attention. These C H activation reactions, generally involving a chelate assisting directing group, have been utilized to form valuable heterocycles and to run useful coupling reactions. In this paper, three different transformations are presented