Ferrocene-derived P,N ligands: synthesis and application in enantioselective catalysis

Abstract

Due to their unique steric and electronic properties, air-stability and modular structure, chiral hybrid P,N-ferrocenyl ligands play a prominent role in the field of asymmetric catalysis. This report aims to give a concise introduction to the syntheses of chiral hybrid P,N-ferrocenyl ligands and presents an overview of their application in enantioselective catalysis. This review is of special interest to chemists working on ligand design and asymmetric catalysis, as well as to the broader organic and inorganic community.

Synthesis, characterization, and electrochemical properties of carbon nanotubes used as cathode materials for Al–air batteries from a renewable source of water hyacinth

“…The wall thickness was approximately 7 nm. Using of ferrocene as a catalyst in the CVD process led to the formation of MWCNTs, agreeing with previous studies by Khan et al and Li et al also proposed that ferrocene act as a catalyst can largely formation of MWCNTs [7,21,27]. Figure 2c demonstrates that the carbon nanotubes possessed a bamboo-like structure, as shown by the wrinkles, the compartments, and the curvatures of the tube walls.…”

Palladium-catalyzed direct asymmetric C–H bond functionalization enabled by the directing group strategy

“…38 Ferrocenes bearing planar chirality have received much attention due to their application in asymmetric catalysis as efficient ligands or catalysts. 39 In the eld of Pd-catalyzed asymmetric C-H bond functionalization, the Yu group developed a series of asymmetric reactions by using a catalytic amount of chiral monoprotected amino acids. 8 Inspired by Yu's work on asymmetric C-H bond functionalization reactions, the You group realized the rst example of Pd-catalyzed asymmetric C-H arylation of N,N-disubstituted dialkylaminomethyl ferrocenes in 2013 by using Boc-L-Val-OH (L14) as the chiral ligand and arylboronic acids as coupling reagents (Scheme 24a).…”

D–A dyads and A–D–A triads based on ferrocene: push–pull dyes with unusual behaviours in solution

“…36 This metallocene comprising an iron (II) cation sandwiched between two coplanar cyclopentadienyl cycles can be reversibility oxidized at a moderate potential so that this metallocene is internationally used as a reference for electrochemistry. 37 However, its scope of application is not limited to electrochemistry and ferrocene is now extensively used in medicine, 38 (photo)polymerization, [39][40] enantioselective catalysis, 41 for the design of molecular machines, 42 metal organic frameworks 43 or molecular rectifiers. 44 Due to its facile oxidation, ferrocene is also a good candidate for the design of donor-acceptor (D-A) conjugates and numerous dyads have been reported over the years.…”