Cyclopolymerization of 1,1-Dipropargyl-1-silacyclohexane by Transition Metal Catalysts

Bulletin of the Korean chemical society

Yun-Cheol Jeong¹  In-Sook Lee¹  Yeong-Soon Gal¹  Eun-Hee Chang¹  Young-Woo Kwak¹ 

关键词: Cyclopolymerization;    Catalysts;    Conjugated spirocyclic polymer;    Polyacetylenes;    Silacyclohexane;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

A conjugated spirocyclic polymer was synthesized via the cyclopolymerization of 1,1-dipropargyl-1- silacyclohexane with various transition metal catalysts. The monomer, 1,1-dipropargyl-1-silacyclohexane was synthesized by Grignard reaction of 1,1-dichloro-1-silacyclohexane with propargyl magnesium bromide. This polymerization proceeded well to give the corresponding poly(1,1-dipropargyl-1-silacyclohexane). The catalytic activity of WCl6 was found to be similar with that of MoCl5. The structure of polymer having the conjugated backbone with silacyclohexane moieties was characterized by such instrumental methods as NMR (1H-, 13C-), IR, and UV-visible spectroscopies. The resulting polymers were mostly yellow or light-brown powders, depending on the catalyst systems used. This polymer was completely soluble in halogenated and aromatic hydrocarbons such as chloroform, 1,2-dichloromethane, benzene, toluene, and chlorobenzene, etc. The thermal and oxidative stabilities of polymer were also studied and discussed.

【 授权许可】

Unknown