Facile access to polymer supported zinc–salen complex: highly efficient heterogeneous catalyst for synthesizing hydantoins, thiohydantoins and Schiff bases in aqueous medium

Balinge, Kamlesh Rudreshwar; Khiratkar, Avinash Ganesh; Muskawar, Prashant Narayan; Thenmozhi, Kathavarayan; Bhagat, Pundlik Rambhau

doi:10.1007/s11164-017-3215-x

Cited by 10 publications

(1 citation statement)

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“…Therefore, there is a bright future for the development of efficient and environmentally friendly catalysts for the Henry reaction. Ni(II) and Zn(II) complexes, two kinds of typical transition metal complexes, have attracted considerable attention due to their encouraging characteristics and broad application prospects for organic synthesis as catalysts [18][19][20][21]. In recent years, the research on and exploration of their catalytic activities in the Henry reaction have been a hotspot [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Catalytic Application of Two Mononuclear Complexes Bearing Diethylenetriamine Derivative Ligand

et al. 2020

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Two mononuclear zero-dimensional Ni(II) and Zn(II) complexes bearing diethylenetriamine derivative ligand, namely [NiL(CH3COO)2(H2O)] (1) and [ZnL(CH3COO)2] (2) [L = N, N’-bis(2-hydroxybenzyl)diethylenetriamine], were synthesized under reflux conditions. The molecular composition and structure of the complexes were identified by IR, PXRD, elemental analyses, and single crystal X-ray diffraction. Complex 1 belongs to a monoclinic crystal system with the P21/n space group, and Complex 2 belongs to a monoclinic crystal system with the C2/c space group. The Henry reaction of nitromethane with aromatic aldehydes was explored with Complexes 1 and 2 as the catalyst. Results from the catalytic reaction revealed that the complexes displayed excellent catalytic activities under the optimized conditions and that the substrate scope of aromatic aldehydes could be extended to a certain extent. In addition, the possible catalytic mechanism of the Henry reaction was also deduced.

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