Di-ionizable p-tert-butylcalix[4]arene-1,3-crown-4 ligands: synthesis and alkaline earth metal cation extraction

Tetrahedron ◽  
2009 ◽  
Vol 65 (31) ◽  
pp. 5893-5898 ◽  
Author(s):  
Xiaodong Liu ◽  
Kazimierz Surowiec ◽  
Richard A. Bartsch
Tetrahedron ◽  
2002 ◽  
Vol 58 (45) ◽  
pp. 9223-9230 ◽  
Author(s):  
Paula M Marcos ◽  
Sandra Félix ◽  
José R Ascenso ◽  
M Amélia Santos ◽  
Manuel A.P Segurado ◽  
...  

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