Highly Atom-Economic One-Pot Formation of Three Different C−P Bonds: General Synthesis of Acyclic Tertiary Phosphine Sulfides
作者:Graziano Baccolini、Carla Boga、Marzia Mazzacurati
DOI:10.1021/jo0502145
日期:2005.6.1
4−5 min, was treated with an equimolar amount of R3MgBr, giving the asymmetric phosphine PR1R2R3 in 45% overall yield (75−80% yield when R1 = R2 and 85−90% yield when R1 = R2 = R3) and the byproduct 6 in 90% yield. The treatment of 6 with PCl3 quantitatively regenerates the starting reagent 1. Treatment of the phosphines with elemental sulfur gave the corresponding sulfides.
苯并噻二磷1与R 1 MgBr和R 2 MgBr的等摩尔混合物反应生成中间体A ',仅在4-5分钟后,用等摩尔量的R 3 MgBr处理中间体A ' ,得到不对称膦PR 1 R 2 R 3占总产率的45%(当R 1 = R 2时产率为75-80%,当R 1 = R 2 = R 3时产率为85-90%),副产物6的产率为90%。用PCl 3处理6可定量再生起始试剂1。用元素硫处理膦,得到相应的硫化物。