Isomerization and Deuterium Scrambling Evidence for a Change in the Rate-Limiting Step during Imine Hydrogenation by Shvo's Hydroxycyclopentadienyl Ruthenium Hydride
作者:Charles P. Casey、Jeffrey B. Johnson
DOI:10.1021/ja044450t
日期:2005.2.1
mechanism analogous to that proposed for aldehyde and ketone reduction. Reduction of electron-rich N-alkyl-substituted imine, N-isopropyl-(4-methyl)benzilidene amine (9), was accompanied by facile imine isomerization and scrambling of deuterium labels from reduction with 5-RuDOH into the N-alkyl substituent of both the amine complex and into the recovered imine. Inverse equilibrium isotope effects were
Strong phenyl–perfluorophenyl π–π stacking and C–H⋯F–C hydrogen bonding interactions in the crystals of the corresponding aromatic aldimines
作者:Shizheng Zhu、Shifa Zhu、Guifang Jin、Zhanting Li
DOI:10.1016/j.tetlet.2005.01.183
日期:2005.4
two co-crystals, 1·2 (aldimines 1 and 2) and 3·4 (aldimines 3 and 4), reveals that there are strong phenyl–perfluorophenyl π–π stacking and intermolecular hydrogen bonding interactions. The new perfluoroaryl–aryl face-to-face interaction of the crystalline aldimines provides a design motif for a new class of self-assembling system.
Zinc-Mediated Radical Reactions of Per- (or Poly)fluorophenyl Aromatic Aldimines in Aqueous Media
作者:Shizheng Zhu、Shaowu Wang、Xinyuan Liu
DOI:10.1055/s-2004-816004
日期:——
additions of alkylhalides to per- (or poly)fluorophenyl aromatic aldimines using zinc as a single-electron-transfer radical initiator have been studied in aqueousmedia. The reaction proceeds well for imines with different substituents at room temperature under air atmosphere and the corresponding fluorine-containing amines and 1,2-diamines are obtained in poor to,Good yields. A tentative reaction mechanism