源自t Bu 3 P和E(C 6 F 5)3(E = B,Al)的沮丧Lewis对(FLP)与p O 2 C 6 Cl 4和Ph 3 SnH反应,得到[ t Bu 3 POC 6 Cl 4 OE(C 6 F 5)3 ](E = B 1,Al 2),[ t Bu 3 PSnPh 3 ] [HB(C 6 F 5)3 ] 3和[ t Bu 3 PSnPh 3 ] [(μ-H)(Al(C 6 F 5)3)2 ] 4。这些产品是通过公认的涉及瞬态“相遇复合体”的两电子过程形成的。相反,Mes 3 P和E(C 6 F 5)3(E = B,Al)与p O 2 C 6 Cl 4的相应反应为[(Mes 3 POC 6 Cl 4 OE(C 6 F 5)3 ](E = B 8,Al 9); 但是,中间体[Mes 3 P·] 2 [(C 6 F 5)3 EOC 6 Cl 4 OE(C 6 F 5)3 ](E =
H2 Activation and Hydride Transfer to Olefins by Al(C6F5)3-Based Frustrated Lewis Pairs
作者:Gabriel Ménard、Douglas W. Stephan
DOI:10.1002/anie.201203362
日期:2012.8.13
Frustrated delivery: FrustratedLewispairs derived from tBu3P and Al(C6F5)3 activateH2 to give [tBu3PH][(μ‐H)(Al(C6F5)3)2], which reacts with unactivated olefins to give RAl(C6F5)2 (R=Et or Cy) and [tBu3PH][Al(C6F5)4]. The proposed mechanism involves olefinactivation by aluminum, which is supported by the isolation of the cyclohexene complex [Al(C6F5)3⋅(C6H10)].
沮丧的交付:源自t Bu 3 P和Al(C 6 F 5)3的沮丧Lewis对激活H 2产生[ t Bu 3 PH] [(μ‐H)(Al(C 6 F 5)3)2 ] ,它与未活化的烯烃反应生成RAl(C 6 F 5)2(R = Et或Cy)和[ t Bu 3 PH] [Al(C 6 F 5)4]。所提出的机制包括通过铝,这是由环己烯络合物[铝(C的分离载体上的烯烃活化6 ˚F 5)3 ⋅(C 6 H ^ 10)。