@misc{hommes_unprecedented_strong_2014, 
author={Hommes, P., Fischer, C., Lindner, C., Zipse, H., Reissig, H.},
title={Unprecedented Strong Lewis Bases - Synthesis and Methyl Cation Affinities of Dimethylamino-Substituted Terpyridines†},
year={2014},
howpublished = {journal article},
doi = {https://doi.org/10.1002/anie.201403403},
abstract = {A versatile method for the synthesis of functionalized 2,2′:6′,2′′-terpyridines by assembly of the terminal pyridine rings is presented. The cyclization precursors—bis-β-ketoenamides—are prepared from 4-substituted 2,6-pyridinedicarboxylic acids and acetylacetone or its corresponding enamino ketone. Treatment with trimethylsilyl trifluoromethanesulfonate induces a twofold intramolecular condensation providing an efficient access to 4,4′′-di- and 4,4′,4′′-trifunctionalized 6,6′′-dimethyl-2,2′:6′,2′′-terpyridines. Using this method, hitherto unknown 4,4′′-bis(dimethylamino)- and 4,4′,4′′-tris(dimethylamino)terpyridines have been prepared that show remarkably high calculated Lewis basicities.},
note = {Online available at: \url{https://doi.org/10.1002/anie.201403403} (DOI). Hommes, P.; Fischer, C.; Lindner, C.; Zipse, H.; Reissig, H.: Unprecedented Strong Lewis Bases - Synthesis and Methyl Cation Affinities of Dimethylamino-Substituted Terpyridines†. Angewandte Chemie - International Edition. 2014. vol. 53, no. 29, 7347-7651. DOI: 10.1002/anie.201403403}}