Abstract
3-(2,2′-Bipyridine-4-yl)-2-propenoic acid ethyl ester which may be used for the introduction of metal coordination sites in polyacrylates is synthesized by an improved synthetic route to the key intermediate 4-bromo-2,2′-bipyridine working under microwave conditions, which leads to drastic shortening of reaction times, as well as to the reduction of reaction steps. In addition, a synthetic procedure to formyl-bipyridines that is not based on reductive or oxidative reaction conditions could be applied. Starting from the formyl-bipyridine derivative the title compound may be effectively generated using modified Horner–Wadsworth–Emmons reaction conditions to yield the new ligand.
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K.H. gratefully acknowledges a Ph.D. Grant from “Stiftung der Deutschen Wirtschaft”.
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Heintz, K., Imhof, W. & Görls, H. Microwave assisted synthesis of 3-(2,2′-bipyridine-4-yl)-2-propenoic acid ethyl ester. Monatsh Chem 148, 991–998 (2017). https://doi.org/10.1007/s00706-016-1908-2
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DOI: https://doi.org/10.1007/s00706-016-1908-2