A highly efficient one-pot procedure for the synthesis of complexes of the type [Ir(COD)(Phox)]X, where Phox is a (chiral) phosphinooxazoline ligand, X = PF6 or B[(3,5-(CF3)2C6H3)]4 (BARF), is developed. Former reported syntheses demanded the isolation of pure ligands by column chromatography, but the ligands tend to adsorb irreversibly on silica. Moreover, the chromatography has to be performed with careful exclusion of air. The present method avoids this difficulties. The yields of the syntheses are comparable with those starting from the pure ligands. The method is also suitable for the preparation of complexes of the type [Rh(COD)(Phox)]BARF and [Rh(Phox)2]BARF.
一种高效的一锅法合成方法用于合成类型为[Ir(COD)(Phox)]X的配合物,其中Phox是一种(手性)膦氧杂环
丙酮配体,X = PF
6或B[(3,5-(CF
3)
2C
6H
3)]
4(BARF)。先前报道的合成方法要求通过柱层析分离纯
配体,但
配体往往会在
硅胶上不可逆地吸附。此外,层析过程必须小心排除空气。目前的方法避免了这些困难。合成的产率与从纯
配体开始的产率相当。该方法还适用于合成类型为[Rh(COD)(Phox)]BARF和[Rh(Phox)
2]BARF的配合物。