Metal-Free HB(C<sub>6</sub>F<sub>5</sub>)<sub>2</sub>-Catalyzed Hydrogenation of Unfunctionalized Olefins and Mechanism Study of Borane-Mediated σ-Bond Metathesis
作者:Yuwen Wang、Weiqiang Chen、Zhenpin Lu、Zhen Hua Li、Huadong Wang
DOI:10.1002/anie.201303500
日期:2013.7.15
Out with the metal: Metal‐free hydrogenation of unfunctionalized olefins can be achieved by employing HB(C6F5)2 as the catalyst. The key step in the catalytic reaction is believed to involve a novel borane‐mediated σ‐bondmetathesis, which has been investigated both experimentally and theoretically.
消除金属:通过使用HB(C 6 F 5)2作为催化剂,可以实现未官能化烯烃的无金属氢化。据信催化反应的关键步骤涉及一种新型的硼烷介导的σ键复分解,该复分解已在实验和理论上进行了研究。
Interactions of C−F Bonds with Hydridoboranes: Reduction, Borylation and Friedel-Crafts Alkylation
作者:Karlee L. Bamford、Saurabh S. Chitnis、Zheng-wang Qu、Douglas W. Stephan
DOI:10.1002/chem.201804705
日期:2018.10.26
fluorides with secondary boranes pinacolborane (HBpin), catecholborane (HBcat), 9‐borabicyclo(3.3.1)nonane (9‐BBN) and Piers’ borane (HB(C6F5)2) are described. While HBcat, 9‐BBN and HB(C6F5)2 reduce Ad‐F to Ad‐H, the latter borane was shown to react with secondary and primary fluoroalkanes, affording C−F borylation, while benzyl fluorides undergo Friedel–Crafts chemistry.
烷基氟化物1-氟金刚烷(Ad-F),氟代环己烷(Cy-F),1-氟戊烷(Pent-F)和苄基氟化物与仲硼烷频哪醇硼烷(HBpin),儿茶酚硼烷(HBcat),9-硼杂环( 3.3.1)描述了壬烷(9-BBN)和Piers'硼烷(HB(C 6 F 5)2)。HBcat,9-BBN和HB(C 6 F 5)2将Ad-F还原为Ad-H时,后者的硼烷与仲和伯氟代烷烃反应,提供CF硼化作用,而苄基氟化物则经历了Friedel-Crafts化学。
CO2 and Formate Complexes of Phosphine/Borane Frustrated Lewis Pairs
作者:Ilona Peuser、Rebecca C. Neu、Xiaoxi Zhao、Matthias Ulrich、Birgitta Schirmer、Jens A. Tannert、Gerald Kehr、Roland Fröhlich、Stefan Grimme、Gerhard Erker、Douglas W. Stephan
DOI:10.1002/chem.201100286
日期:2011.8.22
[tBu3PH][RBH(C6F5)2] (R=hexyl (8), Cy (9), norbornyl (10)) were prepared by reaction of the precursor frustratedLewispair (FLP) with H2. Subsequent reactions of 9 and 10 with CO2 afforded the species [((C6F5)2BR)2(μ‐HCO2)][tBu3PH] (R=Cy (11), norbornyl (12)). In related chemistry, combinations of the boranes RB(C6F5)2 (R=hexyl, Cy, norbornyl) with tBu3P treated with an equivalent of formic acid gave
B(C 6 F 4 H)3和i Pr 3 P或t Bu 3 P的溶液与CO 2的反应得到R 3 P(CO 2)B(C 6 F 4 H)3(R =i Pr(1),t Bu(2))。以类似方式,硼烷RB(C 6 F 5)2(R =己基,环己基(Cy),降冰片基),ClB(C 6 F 5)2或PhB(C将6 F 5)2与t Bu 3 P和CO 2合并,得到t Bu 3 P(CO 2)BR(C 6 F 5)2(R =己基(3),Cy(4),降冰片基(5),Cl(6),Ph(7))。同样,化合物[ t Bu 3 PH] [RBH(C 6 F 5)2 ](R =己基(8),Cy(9),降冰片基(10))是通过前驱物沮丧的路易斯对(FLP)与H 2反应制备的。的后续反应9和10与CO 2,得到物种[((C 6 ˚F 5)2 BR)2(μ-HCO 2)] [吨卜3 PH](R =成分Cy(11),降冰片基(12))
Stoichiometric and Catalytic B−C Bond Formation from Unactivated Hydrocarbons and Boranes
作者:Carl N. Iverson、Milton R. Smith
DOI:10.1021/ja991258w
日期:1999.8.1
Cyclic Ether Triggers for Polymeric Frustrated Lewis Pair Gels
作者:Utku Yolsal、Thomas A. R. Horton、Meng Wang、Michael P. Shaver
DOI:10.1021/jacs.1c06408
日期:2021.8.25
Sterically hindered Lewis acid and base centers are unable to form Lewis adducts, instead forming frustratedLewis pairs (FLPs), where latent reactivity can be utilized for the activation of small molecules. Applying FLP chemistry into polymeric frameworks transforms this chemistry into responsive and functional materials. Here, we report a versatile synthesis strategy for the preparation of macromolecular