2,4,6- OR 2,6-ALKOXYPHENYL DIALKYLPHOSPHINE, TETRAFLUOROBORATE, PREPARATION METHOD AND USE THEREOF
申请人:Zhejiang University
公开号:EP2492274A1
公开(公告)日:2012-08-29
The current invention relates to the structure, synthesis of dialkyl(2,4,6- or 2,6-alkoxyphenyl)phosphine or its tetrafluoroborate, as well as its applications in the palladium catalyzed carbon-chlorine bond activation for Suzuki coupling reactions and carbon-nitrogen bond formation reactions. The dialkyl(2,4,6- or 2,6-alkoxyphenyl)phosphine or its tetrafluoroborate could coordinate with the palladium catalyst to activate the inert carbon-chlorine bond highly selectively and catalyze Suzuki coupling reaction with arylboronic acid or carbon-nitrogen bond formation reaction with organic amines. The current invention uses only one step to synthesize dialkyl(2,4,6- or 2,6-alkoxyphenyl)phosphine and its tetrafluoroborate is stable in the air. Compared with known synthetic routes of ligands used in activating carbon-chlorine bonds, the method of current invention is short, easy to operate. Moreover, with this type of ligands, the Suzuki coupling products of optically active chlorolactones and arylboronic acids would maintain their configuration and optical purity.
本发明涉及二烷基(2,4,6-或 2,6-烷氧基苯基)膦或其四氟硼酸盐的结构、合成及其在钯催化的碳-氯键活化中的应用,用于铃木偶联反应和碳-氮键形成反应。二烷基(2,4,6- 或 2,6- 烷氧基苯基)膦或其四氟硼酸盐可与钯催化剂配位,高选择性地活化惰性碳-氯键,催化与芳基硼酸的铃木偶联反应或与有机胺的碳-氮键形成反应。本发明只需一步即可合成二烷基(2,4,6-或 2,6-烷氧基苯基)膦,其四氟硼酸盐在空气中稳定。与已知的用于活化碳-氯键的配体合成路线相比,本发明的方法时间短,易于操作。此外,使用这类配体,光学活性氯内酯和芳基硼酸的铃木偶联产物将保持其构型和光学纯度。