BIFUNCTIONAL COMPOUNDS CARBAMOYL/PHOSPHONIC ACID OR PHOSPHONATE USED AS LIGANDS FOR URANIUM(VI), THEIR SYNTHESIS PROCESSES AND THEIR USES USES

摘要

The invention relates to new compounds which correspond to the general formula (I): (see formula I) in which: m = 0, 1 or 2; R1 and R2 = a linear or branched C6 to C12 hydrocarbon group; R3 = H, a linear or branched C1 to C12 hydrocarbon group, optionally comprising one or more heteroatoms; a C3 to C8 monocyclic hydrocarbon group, optionally comprising one or more heteroatoms, or a monocyclic (hetero) aryl group; or R2 and R3 together form a - (CH2) n- group with n = from 1 to 4; R4 = a hydrocarbon group, linear or branched, C2 to C8, or a monocyclic aromatic group; R5 = H or a hydrocarbon group, linear or branched, C1 to C12. The invention also relates to processes for the synthesis of these compounds as well as to the use of said compounds as ligands for uranium (VI) and, in particular for extracting uranium (VI) from an aqueous solution of uranium (VI). 'Phosphoric acid.