Boronate Ester‐Capped Helicates. Issue 34 (3rd June 2020)

• Record Type: Journal Article
• Authors: Giraldi, Erica; Depallens, Adrien B.; Ortiz, Daniel; Fadaei‐Tirani, Farzaneh; Scopelliti, Rosario; Severin, Kay
• Is Part Of: Chemistry. Volume 26:Issue 34(2020)
• Page Start: 7578
• Page End: 7582
• Publication Date: 2020-06-03
• Subjects: condensation reaction -- dynamic covalent chemistry -- helicates -- supramolecular chemistry -- trianglimine; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.202001392
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: Triple‐stranded helicates were obtained by metal‐templated multicomponent reactions of bispyridyloxime ligands with arylboronic acids. The helicates feature two hexa‐coordinated M II ions (M=Fe, Zn, or Mn), which are embedded in a macrobicyclic ligand framework, and two arylboronate ester capping groups. The latter can be used to introduce functional groups such as pyridines, aldehydes, nitriles, and carboxylic acids in apical position. The functionalized helicates have the potential to be used as nanoscale building blocks for more complex assemblies, as evidenced by the synthesis of a 3 nm‐sized trianglimine. Abstract : Helicates with caps : Metal‐templated multicomponent reactions of bispyridyloxime ligands with arylboronic acids give helicates with terminal arylboronate ester groups. The latter can be used to introduce functional groups such as pyridines, aldehydes, nitriles, and carboxylic acids in an apical position (see figure).