Isolation and synthetic applications of 2,5-bis(alkynylsilyl)   zirconacyclopentadienes

doi:10.1021/om701002k

CORC > 北京大学 > 化学与分子工程学院

	Isolation and synthetic applications of 2,5-bis(alkynylsilyl) zirconacyclopentadienes
	Liu, Junhui ; Zhang, Wen-Xiong ; Guo, Xiangyu ; Hou, Zhaomin ; Xi, Zhenfeng
刊名	organometallics
	2007
关键词	CARBON BOND FORMATION C-C BOND ZIRCONOCENE COMPLEXES STEREOSELECTIVE-SYNTHESIS METALLACYCLE TRANSFER TITANOCENE-BIS(TRIMETHYLSILYL)ETHYNE COMPLEXES ZIRCONACYCLOBUTENE-SILACYCLOBUTENE DISUBSTITUTED 1,3-BUTADIYNES CYCLOPENTADIENE DERIVATIVES STRUCTURAL-CHARACTERIZATION
DOI	10.1021/om701002k
英文摘要	2,5-Bis(alkynyisilyi)-1-zirconacyclopentadienes 3 were formed highly regio- and chemoselectively in excellent yield by the homocoupling reaction of 2 equiv of bis(alkynyl)silanes 1 mediated by a low-valent zirconocene species (Negishi reagent) generated in situ from Cp2ZrBU2. Single-crystal X-ray structural analysis of 2,5-bis(phenylalkynyldimethylsilyl)-1-zirconacyclopentadiene (3a) revealed a sandwich-type conformation. Hydrolysis or halogenation of these zirconacyclopentadienes 3 afforded multi substituted stereodefined Si-bridged conjugated systems. Skeletal rearrangement of these 2,5bis(alkynylsilyl)-1-zirconacyclopentadienes with aromatic substituents afforded zirconacyclohexadiene - silacyclobutene fused ring compounds 4. Using these zirconacyclopentadienes 3 as starting reactive organometallic reagents, interesting cyclic compounds such as bis(alkynylsilyl)benzene derivatives and bis(alkynylsilyl)thiophene derivatives could be prepared in high yield. Further applications of these alkynylsilyl-substituted compounds for more complicated products and functional materials can be expected.; Chemistry, Inorganic & Nuclear; Chemistry, Organic; SCI(E); 28; REVIEW; 27; 6812-6820; 26
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/250632]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Liu, Junhui,Zhang, Wen-Xiong,Guo, Xiangyu,et al. Isolation and synthetic applications of 2,5-bis(alkynylsilyl) zirconacyclopentadienes[J]. organometallics,2007.
APA	Liu, Junhui,Zhang, Wen-Xiong,Guo, Xiangyu,Hou, Zhaomin,&Xi, Zhenfeng.(2007).Isolation and synthetic applications of 2,5-bis(alkynylsilyl) zirconacyclopentadienes.organometallics.
MLA	Liu, Junhui,et al."Isolation and synthetic applications of 2,5-bis(alkynylsilyl) zirconacyclopentadienes".organometallics (2007).