Reaction of Boranes with TMS Diazomethane and Dimethylsulfoxonium Methylide. Synthesis of Poly(methylidene-co-TMSmethylidene) Random Copolymers
✍ Scribed by Jie Bai; Kenneth J. Shea
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 144 KB
- Volume
- 27
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
Summary: Borane reacts with TDM by a sequence of insertion and disproportionation reactions to yield tris‐(trimethylsilylmethyl)borane. No further addition of TDM occurs. Triallylborane and tris‐(4‐methoxyphenylethyl)borane initiate the copolymerization of TDM and dimethylsulfoxonium methylide. The reactions afford TMS‐substituted polymethylene oligomers. The resultant poly(methylidene‐co‐TMSmethylidene) random copolymers arise from incorporation of TMSmethylidene (CHSiMe~3~) and methylidene (CH~2~) groups into the growing polymer chain one carbon at a time.
Trialkylborane‐catalyzed copolymerization of trimethylsilyl diazomethane and dimethylsulfoxonium methylide.
magnified imageTrialkylborane‐catalyzed copolymerization of trimethylsilyl diazomethane and dimethylsulfoxonium methylide.