Abstract
Deprotonolysis of the N,O-bidentate pyridyl functionalized alkoxy ligands, 1,1-dimethyl-2-(pyridin-2-yl)ethanol (L 1H), 1-phenyl-2-(pyridin-2-yl)ethanol (L 2H) and 1,1-diphenyl-2-(pyridin-2-yl)ethanol (L 3H), with 1 equiv of AlMe3 gave the corresponding dimeric metal-monoalkyl compounds [L 1AlMe2]2 (1), [L 2AlMe2]2 (2), and [L 3AlMe2]2 (3), respectively. Compounds 1–3 were characterized by 1H and 13C NMR spectroscopy analysis, and the molecular structures of 1 and 2 were further confirmed by X-ray diffraction analysis. In the presence of iPrOH, aluminum compounds 1–2 exhibited excellent catalytic activity for the solvent-free Tishchenko reaction under mild conditions. In addition, the catalyst 3 can be easily isolated and recycled three times without a significant decrease in activity.
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Financial support from the National Natural Science Foundation of China (Nos. 21272142, 51174275) and the Natural Science Foundation of Shanxi Province (Nos. 2011021011-1, 2008011021) are gratefully acknowledged.
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Han, HF., Zhang, SF., Guo, ZQ. et al. Synthesis, Crystal Structures and their Utilities in Tishchenko Reaction of N,O-Bidentate Aluminum Compounds. J Clust Sci 26, 1971–1982 (2015). https://doi.org/10.1007/s10876-015-0890-x
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DOI: https://doi.org/10.1007/s10876-015-0890-x