TEFDDOLs (α,α,α′,α′-Tetrakis(perfluoroaryl/alkyl)-2,2′-dimethyl-1,3-dioxolane-4,5-dimethanols): Highly Fluorinated Chiral H-Bond Donors and Brønsted Acids with Distinct H-Bonding Patterns and Supramolecular Architectures
作者:Albrecht Berkessel、Sonja S. Vormittag、Nils E. Schlörer、Jörg-M. Neudörfl
DOI:10.1021/jo301609g
日期:2012.11.16
tartaric dichloride, is reported. X-ray crystal structures of the TEFDDOLs alone or in complexes with H-bondacceptors such as water and DABCO revealed that this new class of highly fluorinated chiral 1,4-diols forms distinct intra- and intermolecular H-bond patterns. Intramolecular OH–OH bonding accounts for the relatively high acidity of the perfluoroalkyl TEFDDOLs (pKa in DMSO: tetrakis-CF3, 5.7;