名称:
Insertion Reactivity of CO2, PhNCO, Me3CC≡N, and Me3CN≡C with the Uranium−Alkynyl Bonds in (C5Me5)2U(C≡CPh)2
摘要:
The insertion reactivity of (C5Me5)(2)U(C CPh)(2), 1, has been studied with CO2, PhNCO, Me-3-CC N, and Me3CN C. Insertion into both U-C CPh bonds of 1 occurs with the first three substrates to form (C5Me5)(2)U(O2CC CPh)(2), 2, (C5Me5)(2)U[PhNC(C CPh)O-kappa N-2,O](2), 3, and (C5Me5)(2)U[N=C(CMe3)(C CPh)](2), 4, respectively. Only 1 equiv of Me3CN C reacts with1I to form (C5Me5)(2)[(PhC C)C=N(CMe3)-eta C-2,N]U(C CPh), 5, a result similar to the (PrN)-Pr-i=C=(NPr)-Pr-i insertion that forms (C5Me5)(2)[(PrNC)-Pr-i(C CPh)(NPr)-Pr-i-kappa N-2,N']U(C CPh), 6.