Bimetallic isopropoxides M[Al(OC3Hi7)4]3 (M = Pr, Nd)—catalyzed reduction of 2-octanone and benzophenone

The effect of oxide acidity on HMF etherification

“…8 Alternatively, the aldehyde or ketone produced could be used in aldol-condensation of HMF. Some examples where transfer hydrogenation has been used include the following: Petra et al 9 performed transfer hydrogenation over ruthenium(II) for the reduction of acetophenone; Mollica et al 10 reported the reduction of aromatic and aliphatic aldehydes using isopropanol as hydrogen donor and ytterbium triflate as the catalyst; Misra et al 11 applied bimetallic alkoxides of praseodymium and neodymium to carry out the transfer hydrogenation of octanone. Of particular interest, transfer hydrogenation has been shown to be catalyzed by solid, inexpensive oxides.…”

Synthesis of zirconia sol stabilized by trivalent cations (yttrium and neodymium or americium): a precursor for Am-bearing cubic stabilized zirconia

“…Paramagnetic Nd(III), an f 3 metal ion, gives characteristic 4f-4f transition spectra in the visible and near infrared spectra. 36 The three 4f-4f transitions, 4 I 9/2 → 4 F 7/2 (740 nm), 4 I 9/2 → 4 F 5/2 (795 nm), and 4 I 9/2 → 4 F 3/2 (865 nm) were used to evaluate quantitatively the complexation of neodymium with acetylacetone. The first stability constant, b 1 , was calculated from each set of UV absorption spectra over a wavelength range of 700-950 nm at each 4f-4f transition using Modeling Factor Analysis (MFA), 30 corresponding to equilibrium (1).…”

Preparation of ZrO2/Na-β and ZrO2/H-β catalysts and their catalytic performance for the Meerwein–Ponndorf–Verley reaction of cyclohexanone and isopropanol

“…At present, homogeneous catalysts for the MPV reaction include single metal alkoxides, bimetallic alkoxides, chiral metal alkoxides, and lanthanide bimetallic alkoxides, for example, aluminum isopropoxide, [9][10][11] praseodymium and neodymium, and complex ligands of vanadium. However, the preparation of the reaction catalyst generally requires alcohol and adoption of the metal reflux method in an anhydrous and oxygen-free environment.…”