A useful procedure for diiodination of carbazoles and subsequent efficient transformation to novel 3,6-bis(triethoxysilyl)carbazoles giving mesoporous materials |
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| Authors: | Yoshifumi Maegawa Shinji Inagaki |
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| Institution: | a Department of Chemical Engineering, Nara National College of Technology, 22 Yata-cho, Yamatokoriyama, Nara 639-1080, Japan
b Toyota Central R&D Laboratories, Inc., Nagakute, Aichi 480-1192, Japan |
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| Abstract: | Bis(pyridine)iodonium tetrafluoroborate (IPy2BF4) was successfully used as a diiodination reagent for carbazole and its derivatives to give 3,6-diiodocarbazoles in excellent yield. Subsequent rhodium-catalyzed disilylation of 3,6-diiodocarbazoles with triethoxysilane gave the corresponding 3,6-bis(triethoxysilyl)carbazoles, which are precursors for sol-gel polymerization, in good yield. |
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| Keywords: | Rhodium catalyst Silylation Carbazole Iodination |
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