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Dendrimers with 1, 3, 5‐Trisilacyclohexane as Core Unit
Authors:Eugen Weisheim  Beate Neumann  Hans‐Georg Stammler  Norbert W Mitzel
Institution:Centre for Molecular Materials CM2, Chair of Inorganic and Structural Chemistry, Faculty of Chemistry, Bielefeld University, Universit?tsstra?e 25, 33615Bielefeld, Germany
Abstract:1, 1, 3, 3, 5, 5‐Hexavinyl‐1, 3, 5‐trisilacylohexane Si(CH=CH2)2CH2]3 was synthesized and hydrosilylated with trichlorosilane to afford the first generation of a dendrimer. Conversion of this molecule with 18 Si–Cl functions on its surface with an excess of vinylmagnesium bromide yielded the 18‐fold vinylated dendrimer. The new compounds were identified by elemental analyses, multi‐nuclear NMR spectroscopy, and mass spectrometry. Crystal structures were obtained for Si(CH=CH2)2CH2]3 and Si(CH2–CH2SiCl3)2CH2]3.
Keywords:Dendrimer  1  3  5‐Trisilacyclohexane  Hydrosilylation  Vinylation
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