Reductive Dehydrogenation of a Stannane via Multiple Sn-H Activation by Frustrated Lewis Pairs.
Reductive Dehydrogenation of a Stannane via Multiple Sn-H Activation by Frustrated Lewis Pairs.
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DOI：
10.1002/anie.201610254
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发表时间：
2017-02
影响因子：
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通讯作者：
Christian P. Sindlinger;Frederik S. W. Aicher;H. Schubert;L. Wesemann
中科院分区：
文献类型：
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作者：
Christian P. Sindlinger;Frederik S. W. Aicher;H. Schubert;L. Wesemann
用众所周知的受挫路易斯对 (FLP) PtBu3 /B(C6 F5 )3 以不同的化学计量处理大体积取代锡烷 Ar*SnH3 (Ar*=2,6-(2',4',6'-三异丙基苯基)苯基)。在某种程度上，观察到氢化物提取和加合物形成，导致生成 [Ar*SnH2 (PtBu3 )]+，其对进一步脱氢相当不反应。在竞争过程中，FLP 被证明能够完全脱除氢和氢化物，生成第一个阳离子膦酰亚锡 [Ar*Sn(PtBu3 )]+ 。这种行为提供了对这些 14 族氢化物衍生物中涉及的活化/抽象机制过程的深入了解。
A bulky substituted stannane Ar*SnH3 (Ar*=2,6-(2',4',6'-triisopropylphenyl)phenyl) was treated with the well-known frustrated Lewis pair (FLP) PtBu3 /B(C6 F5 )3 in varying stoichiometries. To some degree, hydride abstraction and adduct formation is observed, leading to [Ar*SnH2 (PtBu3 )]+ which is rather unreactive toward further dehydrogenation. In a competing process, the FLP proved to be capable of completely striping-off hydrogen and hydrides to generate the first cationic phosphonio-stannylene [Ar*Sn(PtBu3 )]+ . This behavior provides insight into the activation/abstraction mechanism processes involved in these Group 14 hydride derivatives.