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Synthesis, functionalization and crosslinking reactions of poly(silylenemethylene)s

✍ Scribed by Wolfram Uhlig

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 225 KB
Volume: 10
Category: Article
ISSN: 1042-7147
DOI: 10.1002/(sici)1099-1581(199908)10:8<573::aid-pat903>3.0.co;2-n

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✦ Synopsis

Novel poly(silylenemethylene)s have been prepared by the ring-opening polymerization of 1,3-disilacyclobutanes followed by a protodesilylation reaction with triflic acid. The silicon±aryl bond cleavage could be controlled by using different leaving groups, for instance phenyland para-anisyl substituents. The reactions of the triflate derivatives with organomagnesium compounds, LiAlH 4 , amines or alcohols gave functional substituted poly-(silylenemethylene)s. Hydrosilylation reactions or reductive coupling with potassium±graphite led to organosilicon network-polymers, which may serve as suitable precursors for silicon carbide and Si/C/N-based materials. The structures of the polymers were identified by nuclear magnetic resonance spectroscopy ( 29 Si, 13 C, 1 H).

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