Synthesis and Anion Binding Properties of the Bridged Urea Derivatives of Calix[4]arene.
โ Scribed by Yong Shik Yang; Seung Whan Ko; In Hee Song; Byung Ju Ryu; Kye Chun Nam
- Publisher
- John Wiley and Sons
- Year
- 2003
- Weight
- 52 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0931-7597
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๐ SIMILAR VOLUMES
Two calix[4] arene derivatives (5 and 8) and their telomers are synthesized to estimate selective extraction of alkali and transition metal cations from the aqueous to the organic phase (chloroform). Compound 5 shows selectivity toward Hg 2ฯฉ . Compound 8 and telomers 6 and 9 are not selective but a
## Abstract The new chromophore compounds with NLO properties were prepared by Knoevenagel condensation from formyl or diformyl calix[4]arene and isophorone derivatives in the presence of piperidine and acetic acid, respectively. In these chromophore calix[4]arenes, the ring locked trienes were emp
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