Reactions of B2(o‐tolyl)4 with Boranes: Assembly of the Pentaborane(9), HB[B(o‐tolyl)(μ‐H)]4,Angewandte Chemie International Edition

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Reactions of B2(o‐tolyl)4 with Boranes: Assembly of the Pentaborane(9), HB[B(o‐tolyl)(μ‐H)]4
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2021-02-04 , DOI: 10.1002/anie.202101054
Karlee L Bamford ₁ , Zheng-Wang Qu ₂ , Douglas W Stephan ₁

Affiliation

Reactions of the diborane(4) B₂(o‐tolyl)₄ and monohydridoboranes are shown to give B(o‐tolyl)₃ and (o‐tolyl)BR₂ (R₂=(C₈H₁₄) 3, cat 4, pin 5, (C₆F₅)₂ 6) as the major products. The corresponding reaction with BH₃‐sources gives complex mixtures, resulting from hydride/aryl exchange, dimerization and borane elimination. This led to the isolation of the first tetra‐substituted pentaborane(9) HB[B(o‐tolyl)(μ‐H)]₄ 8. The reaction pathways are probed experimentally and by computations.

中文翻译：

B2(邻甲苯基)4 与硼烷的反应：戊硼烷 (9) 的组装，HB[B(邻甲苯基)(μ-H)]4

乙硼烷(4) B ₂ (邻甲苯基) ₄和一氢硼烷的反应得到 B(邻甲苯基) ₃和(邻甲苯基)BR ₂ (R ₂ =(C ₈ H ₁₄ ) 3 , cat 4 、引脚5 、(C ₆ F ₅ ) ₂ 6 )为主要产品。与 BH ₃源的相应反应产生复杂的混合物，由氢化物/芳基交换、二聚和硼烷消除产生。这导致了第一个四取代五硼烷(9) HB[B(邻甲苯基)(μ-H)] ₄ 8的分离。通过实验和计算来探索反应途径。

更新日期：2021-03-30

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