Metal-Ion-Induced Mechanical Chirality: Achiral Rotaxane as the only Ligand in Chiral Palladium(II)-N-Heterocyclic Carbene Complexes
Journal
Organic Letters
Journal Volume
24
Journal Issue
10
Pages
1996-2001
Date Issued
2022
Author(s)
Abstract
We report the insertion of Pd(II) into an originally achiral rotaxane producing two chiral metallorotaxanes: one is planar-chiral, with its two interlocked components both chelating nonequivalently to the metal center; the other is C2-symmetrical-chiral, with the dynamically exchangeable stereogenic units stabilized by the interlocked structure. Chiral additives confirmed the existence of chirality, with the enantiomers of the C2-symmetrical N-heterocyclic carbene complex being resolved using chiral TRISPHAT counteranions. © 2022 American Chemical Society. All rights reserved.
Type
journal article