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KMID : 1059519990430040393
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Journal of the Korean Chemical Society
1999 Volume.43 No. 4 p.393 ~ p.400
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Synthesis of Dendritic Carbosilanes by the Use of Hyperbranched Polymers
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Kim Chung-Kyun
Kang Sung-Kyung
Park Eun-Mi
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Abstract
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Dendritic carbosilanes based on hyperbranched polycarbosilanes as core molecule have been prepared The core molecules were obtained by the use of hydrosilation of HSiMe3-n(CH2CH=CH2)n(n=2,AB2 and 3; AB3 type) The hyperbranched core AB2 and AB3 type polymers were generated to higher molecular dendritic carbosilanes Gn+1 by the use of hydrosilation and alkenylation sequence. The Gn+2P generations were not obtained as unified molecules by the use of hydrosilation with HSiMeCl2. Gn and Gn+1 type polymers were produced to polysilol by the reaction of 9-BBN and alkali medium oxidation of hydroborated compounds. The degree for reaction has been controlled by the NMR spectroscopy.
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