Gehrhus Barbara, Hitchcock Peter B, Parruci Massimo
Department of Chemistry, School of Life Sciences, University of Sussex, Brighton, UK BN1 9QJ.
Dalton Trans. 2005 Aug 21(16):2720-5. doi: 10.1039/b506610g. Epub 2005 Jul 12.
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.
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。
