Trans-Spanned Palladium Catalyst for Mild and Efficient Amination of Aryl Halides with Benzophenone Imine
作者:Dmitri Gelman、Olga Grossman、Karola Rueck-Braun
DOI:10.1055/s-2008-1032142
日期:2008.2
A new protocol for palladium-catalyzed Buchwald-Hartwig amination of aryl chlorides and bromides with benzophenone imine as ammonia surrogate is described. The suggested reaction conditions are mild and may therefore be applied to a variety of sensitive starting materials.
We report the preparation, throughpalladium-catalyzedtransformations, of the indolylfulgimide linkerconjugate 1, containing an adamantane core and nitrileanchoringgroups. The ethynylene-linker 12 for the final Sonogashira coupling was prepared through palladium-mediated cyanation of an iodo-substituted precursor with Zn(CN)2. The synthesis of the 6-bromo-substituted indolylfulgimide coupling partner