Syntheses and X-ray crystal structures of derivatives of 2,2′,4,4′,6,6′-hexaiodobiphenyl
作者:Pier Lucio Anelli、Marino Brocchetta、(the late) Costantino Maffezzoni、Paola Paoli、Patrizia Rossi、Fulvio Uggeri、Massimo Visigalli
DOI:10.1039/b009666k
日期:——
Iodination of 1,1â²-biphenyl-3,3â²,5,5â²-tetrol and 1,1â²-biphenyl-3,3â²-diol with ICl afforded the corresponding 2,2â²,4,4â²,6,6â²-hexaiodo derivatives. Hydrophilic residues aimed at masking the lipophilicity of the iodine atoms were introduced by alkylation of the OH groups. The solid state structures, which were obtained by X-ray crystallography, of three hexaiodinated derivatives (namely 5, 7 and 13) show that, as expected, the two aromatic rings are forced to lie in nearly perpendicular planes by the hindrance of the four iodine atoms adjacent to the inter-annular CâC bond. The hexaiodinated biphenyl skeleton was investigated as the core backbone of a new class of X-ray contrast media.
1,1′-二苯基-3,3′,5,5′-四醇和1,1′-二苯基-3,3′-二醇与ICl进行碘化反应,得到了相应的2,2′,4,4′,6,6′-六碘衍生物。通过烷基化OH基团引入亲水性基团,以掩盖碘原子的脂溶性。通过X射线晶体学获得的三种六碘化衍生物(即5、7和13)的固态结构显示,正如预期的那样,由于与环间C–C键相邻的四个碘原子的阻碍,两个芳香环被迫几乎位于垂直平面。六碘化二苯基骨架被研究作为一种新型X射线对比剂的核心骨架。