Azomethine ylides are nitrogen-based 1,3-dipoles, consisting of an iminium ion next to a carbanion. They are used in 1,3-dipolar cycloaddition reactions to form five-membered heterocycles , including pyrrolidines and pyrrolines .

Aug 29, 2023 · Azomethine imines are valuable substrates for chemical synthesis in organic solvents that often require anhydrous conditions. Here, we introduce C,N-cyclic-N′-acyl azomethine imines (AMIs) to bioorthogonal reactions in an aqueous environment.

There are several methods for the formation of azomethine ylides, including the thermolysis or photolysis of readily prepared aziridines, the dehydrohalogenation of immonium salts, and proton abstraction from imine derivatives of α -amino acids [3].

Dec 10, 2010 · Azomethine-H is used, for example, in boron determination in plants, geochemical materials, and soils. Curcumin is used in determination of boron as an impurity in silicon-doped gallium arsenide used in electronics and in high-purity molybdenum.

Azomethine imines derived from acyclic hydrazones are generated easily upon 1,2-prototropy either under heating by Lewis acid catalysis or by protonation, and can be trapped with different dipolarophiles to afford five-membered dinitrogenated heterocycles through inter- and intramolecular cycloadditions. 16–19 Normally, electron-deficient ...

This review details the various reactions reported in the literature from 2015–2020 involving acyclic, C,N-cyclic and N,N-cyclic azomethine imines as well as any reported mechanistic aspects of the reactions.

Jan 1, 1989 · Azomethine ylides can be classified in groups according to their structure. This chapter concentrates on the most basic ylides, acyclic azomethine ylides, in order to catch the generalized concepts involved in the azomethine ylide chemistry.

Jun 7, 2023 · The design and development of functionalized multifunctional azomethine (–C=N–) ligand owing to diversified structural entity offer a unified platform for the storage of gaseous molecules, material adsorption, optical sensors, catalysts, …

Azomethines is a class of compounds, which have traditionally served as electrophilic substrates, but their reactions with radicals have long been limited. Photocatalysis provided ample opportunities for promoting these reactions, with wide variety of …

The term can be synonymous with azomethine which refers specifically to secondary aldimines (i.e. R−CH=NR' where R' ≠ H). [4] Schiff bases can be synthesized from an aliphatic or aromatic amine and a carbonyl compound by nucleophilic addition forming a hemiaminal, followed by a dehydration to generate an imine.