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.

Synthesis of 4-Alkoxy-2-hydroxyphenyl Ketoximes as Reagents for Metal Extraction.-Friedel-Crafts acylation of resorcinol (I) with the acyl chlorides (II) forms the 2,4-dihydroxyphenyl ketones (III). They are converted to the monoethers (V) and subsequently to the oximes (VI). Various other derivatives of (III), (V), and (VII) are described in the original paper. The extraction properties of some oximes for copper(II)-and iron (III)-ions are measured. -(BEGER, J.; BINTE, H.-J.; BRUNNE, L.; NEUMANN, R.; J. Prakt. Chem./Chem.-Ztg. 334 (1992) 3, 269-277; Inst. Org. Chem.,