Toward Transition‐Metal‐Templated Construction of Arylated B
<sub>4</sub>
Chains by Dihydroborane Dehydrocoupling
作者:Carsten Lenczyk、Dipak Kumar Roy、Kai Oberdorf、Jörn Nitsch、Rian D. Dewhurst、Krzysztof Radacki、Jean‐François Halet、Todd B. Marder、Matthias Bickelhaupt、Holger Braunschweig
DOI:10.1002/chem.201904772
日期:2019.12.20
The reactivity of a diruthenium tetrahydride complex towards three selected dihydroboranes was investigated. The use of [DurBH2 ] (Dur=2,3,5,6-Me4 C6 H) and [(Me3 Si)2 NBH2 ] led to the formation of bridging borylene complexes of the form [(Cp*RuH)2 BR] (Cp*=C5 Me5 ; 1 a: R=Dur; 1 b: R=N(SiMe3 )2 ) through oxidative addition of the B-H bonds with concomitant hydrogen liberation. Employing the more
研究了四氢化二钌络合物对三种选定的二氢硼烷的反应性。[DurBH2 ] (Dur=2,3,5,6-Me4 C6 H) 和 [(Me3 Si)2 NBH2 ] 的使用导致形成 [(Cp*RuH)2 BR] 形式的桥联硼烯配合物(Cp*=C5 Me5 ; 1 a: R=Dur; 1 b: R=N(SiMe3 )2 ) 通过 BH 键的氧化加成伴随氢释放。使用更缺电子的二氢硼烷 [3,5-(CF3 )2 -C6 H3 BH2 ] 导致形成带有四个硼原子的四芳基化链的阴离子络合物,即 Li(THF)4 [(Cp*Ru) 2 B4 H5 (3,5-(CF3 )2 C6 H3 )4 ] (4),通过不寻常的、不完全的三重脱氢偶联过程。4 简化模型和类似复合物 nido-[1,