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Planar Subporphyrin Borenium Cations
被引:82
|作者:
Tsurumaki, Eiji
[2
]
Hayashi, Shin-ya
[2
]
Tham, Fook S.
[1
]
Reed, Christopher A.
[1
]
Osuka, Atsuhiro
[2
]
机构:
[1] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA
[2] Kyoto Univ, Grad Sch Sci, Dept Chem, Sakyo Ku, Kyoto 6068502, Japan
关键词:
SUBPHTHALOCYANINES;
REACTIVITY;
SUBSTITUENT;
CARBORANES;
VERSATILE;
BORINIUM;
SPECTRA;
D O I:
10.1021/ja2056566
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Subporphyrin borenium cations with a carborane counterion have been prepared by treatment of B-methoxy subporphyrins with the silylium reagent Et3Si-(CH6B11Br6). 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.
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页码:11956 / 11959
页数:4
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