Catalytic Dehydrogenative C–C Coupling by a Pincer-Ligated Iridium Complex
作者:Miles Wilklow-Marnell、Bo Li、Tian Zhou、Karsten Krogh-Jespersen、William W. Brennessel、Thomas J. Emge、Alan S. Goldman、William D. Jones
DOI:10.1021/jacs.7b03433
日期:2017.7.5
moderate to good yields, up to ca. 90% based on the disproportionation reaction. The results of DFT calculations and experiments with substituted styrenes indicate that the coupling proceeds via double C–H addition of a styrene molecule, at β-vinyl and ortho-aryl positions, to give an iridium(III) metalloindene intermediate; this intermediate then adds a β-vinyl C–H bond of a second styrene molecule before