Department of Chemistry, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan.
J Am Chem Soc. 2011 Aug 10;133(31):11956-9. doi: 10.1021/ja2056566. Epub 2011 Jul 20.
Subporphyrin borenium cations with a carborane counterion have been prepared by treatment of B-methoxy subporphyrins with the silylium reagent Et(3)Si(CH(6)B(11)Br(6)). In contrast to the distinctly domed subphthalocyanine borenium cation, a nearly planar structure with sp(2) hybridized boron is found in the X-ray structure of the triphenylsubporphyrin borenium cation. The cations exhibit absorption and fluorescence spectra that are quite similar to those of B-methoxy subporphyrins. B-phenyl subporphyrins were prepared in good yield by reaction of subporphyrin borenium cations with phenyllithium.
具有碳硼烷抗衡离子的次卟啉啉硼鎓阳离子已通过用甲氧基次卟啉与硅试剂 Et(3)Si(CH(6)B(11)Br(6))反应制备。与明显的杯酞菁硼鎓阳离子相反，在三苯基次卟啉啉硼鎓阳离子的 X 射线结构中发现了具有 sp(2)杂化硼的几乎平面结构。这些阳离子表现出与 B-甲氧基次卟啉非常相似的吸收和荧光光谱。通过次卟啉啉硼鎓阳离子与苯锂反应，以良好的产率制备了 B-苯基次卟啉。
