Trimethylsilyl- and Trimethylstannyldimethylphosphane—Convenient and Versatile Reagents for the Synthesis of Polyfluoroaryldimethylphosphanes
作者:Leonid I. Goryunov、Joseph Grobe、Vitalij D. Shteingarts、Bernt Krebs、Arno Lindemann、Ernst-Ulrich Würthwein、Christian Mück-Lichtenfeld
DOI:10.1002/1521-3765(20001215)6:24<4612::aid-chem4612>3.0.co;2-7
日期:2000.12.15
and C5NF5. The reactions occur even under mild conditions (T = 0-20 C), either in benzene or without solvent, to give as a rule 4-X-1-(dimethylphosphano)tetrafluorobenzenes (XC6F4PMe2, 1-4) and 4-(dimethylphosphano)tetrafluoropyridine (C5NF4PMe2, 5), respectively, in yields between 75 and 95%. In the case of C6F6, double substitution is also observed, which affords 1,4-bis(dimethylphosphano)tetrafluorobenzene
使用三甲基甲硅烷基二甲基膦(Me3SiPMe2)和相应的锡化合物(Me3SnPMe2)作为多氟芳烃C6F5X(X = F,H,Cl,CF3)和C5NF5中Me2P基团取代氟的试剂。即使在温和条件下(T = 0-20 C),无论在苯中还是在没有溶剂的情况下,反应都会发生,通常生成4-X-1-(二甲基膦基)四氟苯(XC6F4PMe2,1-4)和4-(二甲基膦基) )四氟吡啶(C5NF4PMe2,5)的产率分别为75%至95%。在C6F6的情况下,还观察到双取代,得到1,4-双(二甲基膦基)四氟苯(6)。化合物XC6F4PMe2(X = F,H,Cl,CF3和C5NF4PMe2是在适当的温度下通过相应的氟代芳烃与四甲基二膦(P2Me4)和氢化三甲基锡(Me3SnH)的一锅反应而开发的。测试该方法的C6F6和全氟联苯,分别得到C6F5PMe2(1)和4,4'-双(二甲基膦基)八氟联苯(7)。结果包