Convenient approach to novel functional substituted and branched poly(silylenemethylenes)

✍ Scribed by Wolfram Uhlig

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 241 KB
• Volume: 36
• Category: Article
• ISSN: 0887-624X
• DOI: 10.1002/(sici)1099-0518(19980415)36:5<725::aid-pola6>3.0.co;2-k

✦ Synopsis

Novel poly(silylenemethylenes) 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 phenyl-and para-anisyl substituents. The reactions of the triflate derivatives with organomagnesium compounds, LiAlH 4 , amines, or alcohols gave functional substituted poly(silylenemethylenes). 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 NMR spectroscopy ( 29 Si, 13 C, 1 H). ᭧ 1998