2006 Fiscal Year Final Research Report Summary
Synthesis and Functionalization of Multi-Nuclear Ate Complexes composed of Main-Group Elements
| Project/Area Number |
17550038
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Organic chemistry
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| Research Institution | HIROSHIMA UNIVERSITY |
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Principal Investigator |
KAWACHI Atsushi Hiroshima University, Graduate School of Science, Associate Professor, 大学院理学研究科, 教授 (70260619)
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| Project Period (FY) |
2005 – 2006
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| Keywords | Main-Group Elements / Multi-Nuclear Complex / Ate Complex / Higher Coordinate Compounds |
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| Research Abstract |
(1) Functional group transformations of 7-silanorbornadiene derivatives have been investigated. The 7-mesityl-7-silanorbornadiene was prepared and converted into the 7-chloro derivative. Reductive lithiation of the 7-chloro derivative with lithium naphthalenide afforded the silyllithium, which reacted with Me_3SiCl and MeI. The reactions of the 7-chloro derivative with n-BuLi and PhNHLi gave the 7-butyl derivative and the 7-amino derivative, respectively. Each stereochemistry during these transformations was determined by X-ray crystallographic analysis.
(2) To investigate the intramolecular 1,5-type C^-.-Si interaction, [2-(trimethylsilyl)phenyl] phosphonium methylides were prepared. Treatment of their precursors, the methyl [2-(trimethylsilyl)phenyl] phosphonium iodides, with sodium hexamethyldisilazide in THE afforded the phosphonium methylides, which readily underwent anionic 1,4-silyl migration to form the silylated ylides at low temperatures. They were characterized by NMR and trapping experiments.
(3) ο-[(Dimesitylboryl)phenyl] dimethylsilane underwent dehydrogenative condensation with alcohols and amines, giving the corresponding alkoxysilanes and aminosilanes in moderate to high yields. It is plausible that the ortho-boryl group electrophilically activates the Si-H bond.
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Research Products
(10 results)
