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。
Diphosphine disulfides. III. Influence of structure on the course of phosphinothioic halide-Grignard reactions
作者:Natvarlal K. Patel、H. James Harwood
DOI:10.1021/jo01285a015
日期:1967.10
Maier,L., Chemische Berichte, 1961, vol. 94, p. 3043 - 3050