作者: Alexander E. Waked , Rouzbeh Ostadsharif Memar , Douglas W. Stephan
关键词: Chemistry 、 Frustrated Lewis pair 、 Electron acceptor 、 Lewis acids and bases 、 Phosphonium 、 Nitrogen 、 Cleavage (embryo) 、 One-electron reduction 、 Diazo 、 Medicinal chemistry
摘要: Reaction of PPh3 and [(p-ClC6 H4 )N2 ][BF4 ] affords )N(PPh3 )][BF4 1, while reaction with (Ph2 PCH2 )2 gave )(NPh2 2. These species confirm the Lewis acidity (PR3 cations at N. In contrast, use bulky phosphines afford [ArN2 (R=tBu 3, Mes 4). Compound 3 undergoes one electron reduction to give stable radical (PtBu3 )]. 5. Combination PtBu3 acts as an FLP effect (SPh)2 cleavage, generating [PhSPtBu3 ]+ . Collectively, these data affirm ability )]+ behave or two acceptors.