期刊
TETRAHEDRON LETTERS
卷 54, 期 46, 页码 6271-6274出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2013.09.031
关键词
Fluorinated compounds; Solvent extraction; f-Elements; Malonamide extractants; Lanthanides
资金
- CNRS
- CEA
- RBPCH program of the CEA
Synthesis of new fluorinated tertiary malonamides (F-malonamides) was accomplished, and their liquid/liquid (L/L) extraction properties with f-elements were investigated. These molecules are fluorinated analogues of well known extractants used in several processes designed towards the treatment of nuclear wastes, and the efficient separation of lanthanides from minor actinides; however, the synthesis of F-malonamides deserved a modification of the general synthetic route commonly employed to prepare H-malonamides. Extraction of neodymium from various aqueous media into both fluorous and classical solvents was studied, which revealed an opposite trend between F-malonamides and H-malonamides: L/L extraction ability is very sensitive to the nitrogen atoms substitution pattern, and the most efficient F-malonamide is compound 3 (R-1 = Me), whereas the best H-malonamide is compound 5 (R-1 = Bu, DMDBTDMA). (C) 2013 Elsevier Ltd. All rights reserved.
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