Desymmetrization Reactions: A Convenient Synthesis of Aromatic Diamide Diamines
作者:Claude Picard、Nathalie Arnaud、Pierre Tisnès
DOI:10.1055/s-2001-16076
日期:——
0039-7881 Abstract: A two-step process for the synthesis of various diamide diamines derived from 1,n-diamino benzene compounds is described. The amidation reaction is simple, mild, involves readily available bis(N-acylthiazolidine-2-thione) derivatives as acylating agents and requires only stoichiometric equivalents of diamine and acylating agents.
A helical molecular tweezer that shows tunable intra- and intermolecular charge transfer properties and profound visual changes, both in solution as well as the solid state, through exposure to Lewis/Brønsted acids, is reported.
Schiff-base appended polymers for phosphate removal
作者:Murat K. Deliomeroglu、Vincent M. Lynch、Jonathan L. Sessler
DOI:10.1080/10610278.2017.1372581
日期:2018.10.3
Abstract The remediation of phosphate-contaminated water bodies and the effective treatment of hyperphosphatemia are two big challenges in which phosphate recognition could play a useful role. Here, we summarise briefly the state of the art in phosphate removal. Next, we present findings from synthetic and phosphate extraction studies that involve polymeric materials with pendent Schiff-base macrocycles
A series of aromatic oligoamidefoldamers with two or three pyridine‐2,6‐dicarboxamide units as their main folding motifs and varying aromatic building blocks as linkers have been synthetized to study the effects of the structural variation on the folding properties and conformational stability. Crystallographic studies showed that in the solid state the central linker unit either elongates the helices
Secondary Sphere Hydrogen Bonding in Monocopper Complexes of Potentially Dinucleating Bis(carboxamide) Ligands
作者:Benjamin D. Neisen、Pavlo V. Solntsev、Mohammad R. Halvagar、William B. Tolman
DOI:10.1002/ejic.201501060
日期:2015.12
the intramolecularhydrogen bonds, consistent with removal of electron density from the metal center by the hydrogenbonding array. Another ligand variant (H4L5) with ortho-phenylene linkers and only one bis(carboxamido)pyridine moiety yielded monocopper complexes [NMe4][(H2L5)Cu(OAc)] • DMF (8) and [NMe4][(H2L5)CuCl)] • CH3CN (9), but the X-ray structures revealed a different hydrogenbonding arrangement