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Synthesis of silylene–propenylene oligomers via catalytic polycondensation of diallyldiorganosilanes

✍ Scribed by Bogdan Marciniec; Mariusz Lewandowski; Ewa Kwiatkowska

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
174 KB
Volume
35
Category
Article
ISSN
0887-624X

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✦ Synopsis

Acyclic diene polycondensation (ADP) of diallyldiorganosilanes (CH 2 | CHCH 2 ) 2 SiR 2 (where R Å Me, Ph), in the presence of various ruthenium and rhodium complexes, led predominantly to linear silylene-propenylene oligomers. Ruthenium catalysts (e.g. RuCl 2 (PPh 3 ) 3 , RuHCl(CO)(PPh 3 ) 3 , and RuCl(SiMe 3 )(CO)(PPh 3 ) 2 ) were found to be more efficient than the rhodium ones. The reaction proceeds via preliminary catalytic isomerization of allylsilane to silyl-1-propenes followed by their oligococondensation.

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Synthesis of silylene-vinylene oligomers
Synthesis of silylene-vinylene oligomers via catalytic polycondensation of divinyldimethylsilane
✍ Bogdan Marciniec; Mariusz Lewandowski 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 English ⚖ 217 KB 👁 2 views

Acyclic diene polymerization (ADP) of divinyldimethylsilane in the presence of ruthenium RuCl,(PPh,), and rhodium [RhCl(cod)I2 catalysts led predominantly to linear silylenevinylene oligomers ( M , = 1510 and M J M , = 1.19) if the ruthenium catalyst was used or to mixture of cyclic and linear oligo