293762-86-4

Upstream product

• 3316-09-4 1,2-dihydroxy-4-nitrobenzene 
• 628-89-7 2-(2-Chloroethoxy)ethanol 
• 41757-99-7 1,2-bis[2-(2-hydroxyethoxy)ethoxy]benzene 

Downstream Products

• 1059188-50-9 1,2-bis[2-(2-chloroethoxy)ethoxy]-4-nitrobenzene 
• 300800-59-3 C₂₈H₃₃NO₁₂S₂ 

Relevant academic research and scientific papers

Synthesis of Ionizable Calix[4]arenes for Chelation of Selected Divalent Cations

Two sets of functionalised calix[4]arenes, either with a 1,3-crown ether bridge or with an open-chain oligo ether moiety in 1,3-position were prepared and further equipped with additional deprotonisable sulfonamide groups to establish chelating systems for selected cations Sr2+, Ba2+, and Pb2+ ions. To improve the complexation behaviour towards these cations, calix[4]arenes with oligo ether groups and modified crowns of different sizes were synthesized. Association constants were determined by UV/Vis titration in acetonitrile using the respective perchlorate salts and logK values between 3.2 and 8.0 were obtained. These findings were supported by the calculation of the binding energies exemplarily for selected complexes with Ba2+.

Supramolecular aggregates in fluid phases: Mesomorphic ortho-palladated complexes with substituted crown ethers and their potassium adducts

New imines (HL) containing substituted dibenzo-18-crown-6-ethers and their dinuclear ortho-palladated complexes, [Pd(μ-X)L]2 (X- = CH3COO-, Cl-), have been prepared. The free imine ligands are not liq

Synthesis of nitro and amino derivatives of benzothiacrown ethers

The condensation reaction of 1,2-bis(2-haloethoxy)-4-nitrobenzenes with acyclic α,ω-(oxa)alkanedithiols in the presence of alkali metal carbonates produced a series of nitrobenzodithiacrown ethers with macrocycles of different size. The structures of thre