The one-pot halomethylation of 5-substituted salicylaldehydes as convenient precursors for the preparation of heteroditopic ligands for the binding of metal salts
摘要:
The one-pot bromo- and chloro-methylation of various 5-substituted salicylaldehydes with paraformaldehyde and hydrobromic or hydrochloric acid has been achieved. This approach establishes a convenient and flexible method to attach functional arms to salicylaidehydes for further applications in organic and coordination chemistry. Examples are described using 3-bromomethyl-5-t-butylsalicylaldehyde in the synthesis of piperazine-containing heteroditopic ligands as receptors for metal salts. (c) 2006 Elsevier Ltd. All rights reserved.
The one-pot halomethylation of 5-substituted salicylaldehydes as convenient precursors for the preparation of heteroditopic ligands for the binding of metal salts
作者:Qiang Wang、Claire Wilson、Alexander J. Blake、Simon R. Collinson、Peter A. Tasker、Martin Schröder
DOI:10.1016/j.tetlet.2006.09.149
日期:2006.12
The one-pot bromo- and chloro-methylation of various 5-substituted salicylaldehydes with paraformaldehyde and hydrobromic or hydrochloric acid has been achieved. This approach establishes a convenient and flexible method to attach functional arms to salicylaidehydes for further applications in organic and coordination chemistry. Examples are described using 3-bromomethyl-5-t-butylsalicylaldehyde in the synthesis of piperazine-containing heteroditopic ligands as receptors for metal salts. (c) 2006 Elsevier Ltd. All rights reserved.
Anion Selectivity in Zwitterionic Amide-Functionalised Metal Salt Extractants
作者:Stuart G. Galbraith、Qiang Wang、Li Li、Alexander J. Blake、Claire Wilson、Simon R. Collinson、Leonard F. Lindoy、Paul G. Plieger、Martin Schröder、Peter A. Tasker
DOI:10.1002/chem.200601874
日期:2007.7.16
[Cu(L-2H)], are selective for Cl- over SO4(2-) in both solvent extraction and bulk liquid membrane transport experiments and were found to bind Cl- in two steps via the formation of a 1:1:1 [Cu(L-H)Cl] assembly, followed by a 1:1:2 [Cu(L)Cl2] assembly as the pH of the aqueous phase is lowered. The aniontransportselectivity was evaluated for a number of other mono-charged anions and interestingly