高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 440.
• Synthetic Sciences • 上一篇 下一篇
Ruth M Gschwind, XIE Xiu-Lan, Pattuparambil R. Rajamohanan, Carsten Auel, Gernot Boche
Ruth M Gschwind, XIE Xiu-Lan, Pattuparambil R. Rajamohanan, Carsten Auel, Gernot Boche
摘要:
Despite of the wide application of organocuprates in many areas of organic synthesis, little is known about their detailed structures in solution. Recently we found by NMR that organocuprates in etheral solution exist as an equilibrium between solvent separated ion pairs (SSIPs) and contact ion pairs (CIPs) with the preference of the equilibrium mainly dependent of the solvent properties, and the CIPs as the reactive species. We focus here on 1H, 6Li and 1H, 1H distances investigation by NMR spectroscopy of Me2CuLi(l) and Me2CuLi*LiCN (1*LiCN) in Et2O as models for the structure of salt-free and salt-containing CIPs in solution.
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