Ruthenium-Catalyzed Ionic Hydrogenation of Aziridinium Cations
作者:Hairong Guan、Sahar A. Saddoughi、Anthony P. Shaw、Jack R. Norton
DOI:10.1021/om050456v
日期:2005.12.1
Hydride transfer from CpRu(dppm)H (dppm = bis(diphenylphosphino)methane) to asymmetrically substituted aziridinium cations occurs at the less substituted carbon when the substituents are alkyl, but at the more substituted carbon when the substituent is phenyl. Some of the phenyl-substituted aziridinium cations react with the amine resulting from H- transfer; the reaction of the same phenyl-substituted
Effect of Chelate Ring Size on the Rate of Hydride Transfer from CpRu(P−P)H (P−P = Chelating Diphosphine) to an Iminium Cation
作者:Hairong Guan、Masanori Iimura、Matthew P. Magee、Jack R. Norton、Kevin E. Janak
DOI:10.1021/om0303404
日期:2003.9.1
The rate constants for hydride transfer from CpRu(P−P)H (P−P = bis(diphenylphosphino)methane (dppm), bis(diphenylphosphino)ethane (dppe), bis(diphenylphosphino)benzene (dpbz), or bis(diphenylphosphino)propane (dppp)) to 1-(1-phenylethylidene)pyrrolidinium tetrafluoroborate have been measured. The bite angles of the hydride complexes CpRu(dppm)H, CpRu(dppe)H, CpRu(dpbz)H, and CpRu(dppb)H (dppb = bi