and the Forsén−Hoffman spin saturation transfer method. The reaction of 2a with Lipz (pz = pyrazolide) gives the ansa-ferrocene 1,1‘-fc[B(μ-PPh2)PPh2][B(μ-pz)Br] (3a), featuring an interannular (BNNBP) heterocyclic bridge. When Lipz* (pz* = 4-bromo-3,5-dimethylpyrazolide) was used rather than Lipz, two products could be isolated: 3b, which is analogous to 3a, and 1,1‘-fc[B(μ-PPh2)Br][B(μ-pz)Br] (3c)
从容易获得的二
硼烷基
二茂铁1,1'-fc [B(Br)R] 2(fc =(C 5 H 4)Fe(C 5 H 4); R:Br(1a),Me(1b),OEt(1D)),ferrocenophanes 1,1'- FC [B(μ-PPH 2)R] 2(R = Br的(图2a)中,Me(2B),PPH 2(2D))和1,1'- FC [B (μ-PPH 2)OET] [B(μ-PPH 2)PPH 2 ](图2c)的反应时与LiPPh得到2。相反,1,1'-fc [B(Br)pyr] 2(pyr =
吡咯烷基,1e)和2当量的LiPPh 2给出开链
二茂铁1,1′-fc [B(PPh 2)pyr] 2(2e)。使用可变温度NMR光谱和Forsén-Hoffman自旋饱和转移方法研究了B 2 P 2桥联物种的动力学行为。的反应2A与Li
PZ(
PZ = pyrazolide)给出柄-
二茂铁-1,1'- FC