Transition-metal mediated asymmetric synthesis. Part 5. Alternative methods for the formation of tricarbonyl(η<sup>5</sup>-cyclohexadienyl)iron(1+) salts
作者:Rikki P. Alexander、G. Richard Stephenson
DOI:10.1039/dt9870000885
日期:——
The influence of substituents on the preparation of tricarbonyl(η5-cyclohexadienyl) iron(1+) salts by oxidation using thallium(III) tris(trifluoroacetate) and by hydride abstraction using 2,3-dichloro-5,6-dicyano-1,4- benzoquinone–tetrafluoroboric acid has been examined. Hydride abstraction by thallium oxidation is superior to conventional methods and offers complementary regiocontrol in some cases