97725-90-1

Upstream product

• 7158-35-2 1-(diethoxyphosphonyl)buta-1,3-diene 
• 17450-29-2 1-hexyl-1H-pyrrole-2,5-dione 
• 1417908-83-8 N-(6-chlorohexyl)maleimide 
• 124529-64-2 tert-butyl (6-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)hexyl)carbamate 
• 180608-78-0 1-(5-hydroxypentyl)-1H-pyrrole-2,5-dione 
• 157503-18-9 1-(6-hydroxyhexyl)-1 H-pyrrole- 2,5-dione 
• 34321-81-8 1-(2-(2-hydroxyethoxy)ethyl)-1H-pyrrole-2,5-dione 
• 4856-87-5 N,N-hexamethylenebis(maleimide) 
• 123687-40-1 N,N-(2(2-ethoxy)ethyl)-bis-maleimide 

Relevant academic research and scientific papers

Functionalized phosphonated half-cage molecules as ligands for metal complexes

Phosphonated molecules, featuring a half-cage structure and a N-lateral chain with additional metal coordinating groups were designed as ligands of metal cations. These compounds were synthesized by a Diels-Alder (DA) strategy, using 1-diethoxyphosphoryl-1,3-butadiene and a series of N-substituted maleimides as dienophiles. Two cycloadducts, bearing a terminal primary alcohol and a terminal iodide, respectively, were used as key intermediates for further functionalizations. Metal coordination properties of the ligands equipped with functionalized N-lateral chains were proven by an ESI-HRMS study. The stoichiometry of one selected EuIII complex with a diphosphonated ligand was determined by photoluminescence spectroscopy in emission mode.