Reactions of Group 13 and 14 Hydrides and Group 1, 2, 13 and 14 Organyl Compounds with (
<i>tert‐</i>
Butylimino)(2,2,6,6‐tetramethylpiperidino)borane
作者:Ulrike Braun、Barbara Böck、Heinrich Nöth、Ingo Schwab、Manfred Schwartz、Siegfried Weber、Ulrich Wietelmann
DOI:10.1002/ejic.200300820
日期:2004.9
tmp−B(SnPh3)−NHtBu was formed showing an umpolung of the hydrostannylation. Organyllithium compounds provide access to N-lithiodiaminoboranes of the type tmp−BR−NtBu−Li. The stability of these compounds depends on the substituent R. The least stable compound was the B−tBu derivative followed by the B-methyl compound. However, in the presence of TMEDA tmp−BMe−NtBu−Li is sufficiently stable to allow reactions
(叔丁基亚氨基)(2,2,6,6-四甲基哌啶基)硼烷 (1) 是一种高活性物质。它的 B≡N 三键插入硼烷的 B-H 键 R2BH,生成 tmp-BH-NtBu-BR2 类型的二硼胺(tmp = 2,2,6,6-四甲基哌啶基;R = H、Cl、Br ,或有机基)。Thexylborane 反应类似,但它的两个 B-H 键中只有一个用于 1 的硼氢化。然而,二卤硼烷 HB(Hal)2-SMe2 (Hal = Cl, Br) 产生 B-卤化产物 tmp-B(Hal) -NtBu-BH(Hal),而与 H2B(Hal)-SMe2 的反应通过竞争性硼氢化和卤化反应产生两种异构体的混合物。Tmp-BH-NtBu-AlH2 是从 1 和 AlH3-NMe3 获得的。它是一种固态二聚体,具有五配位的 Al 原子和 AlH2Al 桥。用 Me2SiHCl 实现 1 的氢化硅烷化,SiHCl3 或 Ph2SiH2