稳定的甲硅烯Si[(NCH2But)2C6H4-1,2]与锂酰胺的反应。

Reaction of the stable silylene Si[(NCH2But)2C6H4-1,2] with lithium amides.

作者信息

Gehrhus Barbara, Hitchcock Peter B, Parruci Massimo

机构信息

Department of Chemistry, School of Life Sciences, University of Sussex, Brighton, UK BN1 9QJ.

出版信息

Dalton Trans. 2005 Aug 21(16):2720-5. doi: 10.1039/b506610g. Epub 2005 Jul 12.

DOI:10.1039/b506610g

PMID:16075111

Abstract

The thermally stable silylene Si[(NCH2But)2C6H4-1,2] 1 undergoes oxidative addition reactions with the lithium amides LiNRR'(R = SiMe3, R' = But; R = SiMe3, R' = C6H3Me2-2,6; R = R' = Me or R = R' = Pri) to afford the new lithium amides Li(THF)2[N(R)Si(SiMe3){(NCH2But)2C6H4-1,2}][R = But2 or R = C6H3Me2-2,6 (3a)] or the new tris(amino)functionalised silyllithiums Li(THF)x[Si{(NCH2But)2C6H4-1,2}NRR'][R = SiMe3, R' = C6H3Me2-2,6, x = 2 (3); R = R'= Me, x = 3 (4) or R = R' = Pri, x = 3 (5)]. Compounds 4 and 5 are stable at ambient temperature but compound 3 is thermally labile and converts into 3a upon heating. The pathway for the formation of 2 and 3 is discussed and the X-ray structures of 2-5 are presented.

摘要

热稳定的硅烯Si[(NCH2But)2C6H4-1,2] 1与锂酰胺LiNRR'（R = SiMe3，R' = But；R = SiMe3，R' = C6H3Me2-2,6；R = R' = Me或R = R' = Pri）发生氧化加成反应，生成新的锂酰胺Li(THF)2[N(R)Si(SiMe3){(NCH2But)2C6H4-1,2}] [R = But2或R = C6H3Me2-2,6 (3a)] 或新的三（氨基）官能化硅锂Li(THF)x[Si{(NCH2But)2C6H4-1,2}NRR'] [R = SiMe3，R' = C6H3Me2-2,6，x = 2 (3)；R = R' = Me，x = 3 (4) 或R = R' = Pri，x = 3 (5)]。化合物4和5在室温下稳定，但化合物3热不稳定，加热时会转化为3a。讨论了2和3的形成途径，并给出了2 - 5的X射线结构。