Synthesis of 4‐Alkoxy‐2‐hydroxyphenyl Ketoximes as Reagents for Metal Extraction
The C‐Acylation (Friedel‐Crafts reaction) of resorcinol with aluminium chloride, the monoetherification in 4‐position of the resulting 2,4‐dihydroxyphenylketones, and the preparation of oximes (8, 9, 10, 11) from this ketones were investigated. The compounds obtained are characterized by elemental analysis, and the i.r., u.v. and 1H‐n.m.r. spectra are discussed. Solubility data of some oximes are determined in water, octane and toluene. The extraction properties for copper‐(II)‐and iron‐(III)‐ions are measured by isotope methods in relation to the extragent structure, the extraction time and the pH‐range.