2021
DOI: 10.3390/catal11091090
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Alkoxy-Functionalized Schiff-Base Ligation at Aluminum and Zinc: Synthesis, Structures and ROP Capability

Abstract: The Schiff-base compounds 2,4-di-tert-butyl-6-(((3,4,5-trimethoxyphenyl)imino)methyl)phenol (L1H), 2,4-di-tert-butyl-6-(((2,4,6-trimethoxyphenyl)imino)methyl)phenol (L2H), 2,4-di-tert-butyl-6-(((2,4-trimethoxyphenyl)imino)methyl)phenol) (L3H) derived from anilines bearing methoxy substituents have been employed in the preparation of alkylaluminum and zinc complexes. Molecular structure determinations reveal mono-chelate aluminum complexes of the type [Al(Ln)(Me)2] (L1, 1; L2, 2; L3, 3), and bis(chelate) comple… Show more

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Cited by 13 publications
(8 citation statements)
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“…S2 †. Compared with the catalytic activities in catalyzing ROP of ε-CL demonstrated by aluminium complexes, 1 exhibits compatible activities to some complexes bearing Schiff base ligands 18,19,51 but worse activities to some complexes bearing pyrazolylephenolate ligands 48 or 2-(1,10-phenanthrolin-2-yl)phenolate ligands. 50 Polymerization of l -lactide employing 1 as catalyst in the presence of benzyl alcohol has been investigated under a dry nitrogen atmosphere as well (entries 17–20).…”
Section: Resultsmentioning
confidence: 99%
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“…S2 †. Compared with the catalytic activities in catalyzing ROP of ε-CL demonstrated by aluminium complexes, 1 exhibits compatible activities to some complexes bearing Schiff base ligands 18,19,51 but worse activities to some complexes bearing pyrazolylephenolate ligands 48 or 2-(1,10-phenanthrolin-2-yl)phenolate ligands. 50 Polymerization of l -lactide employing 1 as catalyst in the presence of benzyl alcohol has been investigated under a dry nitrogen atmosphere as well (entries 17–20).…”
Section: Resultsmentioning
confidence: 99%
“…Due to the diverse applications of biodegradable polymers, [1][2][3][4][5][6][7][8][9] development of catalysts applied in preparation of such polymers has attracted attention during the past decades. [10][11][12][13][14][15][16][17][18][19] Metal-based initiators/catalysts applied in ring opening polymerization became a focus topic mainly due to their wellcontrolled character and promising catalytic activities. [13][14][15][16][17][18][19] Among these studies, the phenolate-containing ancillary ligands usually worked as efficient functionalities in preparing metal complexes, such as metal Schiff base complexes.…”
Section: Introductionmentioning
confidence: 99%
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“…This Special Issue also introduces efforts entitled "Immobilization of Rh(I)-N-Xantphos and Fe(II)-C-scorpionate onto magnetic nanoparticles [8]" and "5-(2-Pyridyl)tetrazolate complex of molybdenum(VI)" as precursors for reusable molybdenum oxide-based hybrid heterogeneous catalyst [9]. Moreover, this Special Issue introduces efforts concerning ring opening polymerization using Al and Zn complex catalysts [10], isospecific propylene polymerization by zirconium catalysts [11], and analysis of catalyst solution for ethylene copolymerization using XAS spectroscopy in solution [12].…”
mentioning
confidence: 99%