Microwave-Promoted Palladium(II)-Catalyzed CP Bond Formation by Using Arylboronic Acids or Aryltrifluoroborates
作者:Mounir Andaloussi、Jonas Lindh、Jonas Sävmarker、Per J.â
R. Sjöberg、Mats Larhed
DOI:10.1002/chem.200901473
日期:2009.12.7
first PdII‐catalyzed P arylation has been performed by using palladium acetate, the rigid bidentate ligand dmphen (dmphen=2,9‐dimethyl‐1,10‐phenanthroline), and without the addition of base or acid. Couplings of arylboronic acids or aryl trifluoroborates with H‐phosphonate dialkyl esters were conducted in 30 min with controlled microwave (MW) heating under non‐inert conditions. Aryl phosphites were also
第一个Pd II催化的芳基化反应是通过使用乙酸钯,刚性双齿配体dmphen(dmphen = 2,9-二甲基-1,10-菲咯啉)进行的,无需添加碱或酸。在非惰性条件下,在受控的微波(MW)加热下,在30分钟内完成芳基硼酸或芳基三氟硼酸酯与H-膦酸酯二烷基酯的偶联反应。亚磷酸芳基酯也在室温下以大气作为唯一的再氧化剂合成。芳基化膦酸酯的分离率为44–90%。结核分枝杆菌的合成证明了该方法的优异化学选择性。谷氨酰胺合成酶(MTB‐GS)抑制剂。在线ESIMS被用于直接检测正在进行的反应中的阳离子钯物种,并基于这些结果提出了催化循环。