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Molecular Design of Calixarene 5. Syntheses and Cation Selectivities of Novel Schiff's Base p‐tert ‐Butylcalix[4]arenes
Author(s) -
Liu Yu,
Zhao BangTun,
Wang Hao,
Chen QiFa,
Zhang HengYi
Publication year - 2001
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20010190316
Subject(s) - chemistry , calixarene , schiff base , alkali metal , amine gas treating , medicinal chemistry , base (topology) , solvent , cyclophane , aqueous solution , aromatic amine , polymer chemistry , metal , organic chemistry , molecule , mathematical analysis , mathematics
Five novel Schiff's bases p‐tert ‐butylcalix[4]arenes have been synthesized in high yields by the reaction of 1,3‐distally disubstituted p‐tert ‐butylcalix[4]arene amine (1) with the corresponding aromatic aldehydes, and their cation binding abilities and selectivities with alkali and heavy metal ions have been evaluated by solvent extraction of aqueous metal picrates to show the highest Ag + extractability for Schiff's base p‐tert‐ butylcalix[4]arene (6) and the best Na + /Li + and Ag + /Ti + selectivities for Schiff's base p‐tert ‐butylcalix[4]arene (4 and 2) over any other calix[4]arene derivatives, respectively.