calix[4] arene incorporating one diaza-tetraoxa-macrocyclic [18]-N204 subunit on each side of 1,3-alternate calix[4]arene framework, has been synthesized. The complexations of some alkali and ammonium cations by this macropentacycle have been studied by means of proton nuclear magnetic resonance sp
Synthesis of 1,3-alternate calix[4]-cyclen-benzo-crown-6 as a hard–soft receptor
✍ Scribed by Buncha Pulpoka; Matinee Jamkratoke; Thawatchai Tuntulani; Vithaya Ruangpornvisuti
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- French
- Weight
- 74 KB
- Volume
- 41
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
1,3-Alternate calix[4]-cyclen-benzo-crown-6 incorporating a cyclen subunit on one side and a benzocrown-6 on the other side of the calix[4]arene framework has been synthesized. Preliminary complexation studies of this macropolycycle with cesium and zinc picrate salts have been carried out by means of proton nuclear magnetic resonance spectroscopy.
📜 SIMILAR VOLUMES
It is reported the synthesis of ligands 6 and $ combining one calix[4]arene unit in the 1,3-alternate conformation and crown ether and aza crown ether elements. Preliminary comp|exations are given.
Novel chromogenic 1,3-calix[4](crown-6) derivatives comprised of 1,1%-binaphthyl-, methyl-a-D-glucoside-and D-mannitol moieties in the crown ether ring have been synthesized. UV-vis spectroscopic measurements of the 2,4-dinitrophenylazo chromogenic molecules indicated noticeable chiral discriminatio