Addition of E–H (E = N, P, C, O, S) Bonds to Heterocumulenes Catalyzed by Benzimidazolin-2-iminato Actinide Complexes
作者:Heng Liu、Natalia Fridman、Matthias Tamm、Moris S. Eisen
DOI:10.1021/acs.organomet.7b00502
日期:2017.10.23
The synthesis and characterization of benzimidazolin-2-iminato actinide(IV) complexes [(BimR1/R2N)An(NSiMe3}2)3] (An = U, Th) (1–6) is reported. All complexes were obtained in high yields, and their solid state structures were established through single-crystal X-ray diffraction analysis. Using 1–6 as precatalysts, the addition of mono- and bifunctional E–H (E = N, P, C, O, S) substrates to various
Thermodynamic, kinetic, and mechanistic studies of the thermal guanidine metathesis reaction
作者:Venecia Ramirez、Evan B. Van Pelt、Reeth K. Pooni、Alberto J. Melchor Bañales、Michael B. Larsen
DOI:10.1039/d2ob01036d
日期:——
describe studies of the thermal guanidine metathesis (TGM) reaction, a reversible transformation that results in exchange of N-substituents of the guanidine functional group. By comparing the effects of discrete structural variations, we find that steric congestion is an important factor in determining both the equilibrium guanidine composition and the reaction kinetics. The alkyl versus aryl nature of