Citation: LUO Mei, ZHANG Zhi-Jun, WANG Lei, ZHANG Jing-Cheng. Synthesis and Catalytic Activity of Nickel(Ⅱ) and Cobalt(Ⅱ) Complexes Involving Chiral Leucinol[J]. Chinese Journal of Structural Chemistry, ;2015, 34(12): 1851-1856. doi: 10.14102/j.cnki.0254-5861.2011-0906 shu

Synthesis and Catalytic Activity of Nickel(Ⅱ) and Cobalt(Ⅱ) Complexes Involving Chiral Leucinol

1.
Hefei University of Technology, Department of Chemical Engineering, Hefei 230009, China

Corresponding author: LUO Mei,
Received Date: 20 September 2015
Available Online: 5 November 2015

The title nickel complex I and cobalt complex Ⅱ were obtained separately from the direct reaction of D-(+)-leucinol with Ni(Ⅱ) chloride and L-(-)-leucinol with Co(Ⅱ) acetate tetrahydrate in anhydrous methanol. The crystal structures of I and Ⅱ were determined by single-crystal X-ray diffraction and further characterized by elemental analysis and IR. For I: [Ni(C₁₈H₄₅N₃O₃)]Cl₂, orthorhombic, P2₁2₁2₁, a=11.2807(9), b=14.7115(11), c=16.3580(13) Å, V=2714.7(4) Å³, Z=4, ρ_calcd=1.177 Mg/m³, the final R=0.0407, and 16539 reflections observed with I>2σ(I); For Ⅱ: [Co(C₄₅H₁₀₈N₆O₁₅)], trigonal, R3:H, a=23.981(3), b=23.981(3), c=10.8925(15) Å, γ=120°, V=5425.1(14) Å³, Z=3, ρ_calcd=1.002 Mg/m³, the final R=0.0625 for 16556 observed reflections with I>2σ(I). The complexes were then used to catalyze the Henry reaction and obtained good catalytic results. The catalytic activity of the complexes was determined by ¹H NMR. And research is going towards the application to other organic reactions such as cyanosilylation reaction.
- chiral leucinol,
- nickel complex,
- cobalt complex,
- Ni(Ⅱ) chloride,
- Co(Ⅱ) acetate tetrahydrate
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