Syntheses of Novel Tripodal Calix[n]cryptands (n = 4, 6) and Their Extraction Abilities toward Cations

✍ Scribed by Jian-Sen Li; Yuan-Yin Chen; Xue-Ran Lu

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 278 KB
• Volume: 2000
• Category: Article
• ISSN: 1434-193X
• DOI: 10.1002/(sici)1099-0690(200002)2000:3<485::aid-ejoc485>3.0.co;2-b

✦ Synopsis

The tripodal calixcryptands have been one of the scarcely explored fields in calixarene chemistry due to the difficulties in their preparation. The strategy presented in this paper shows that novel tripodal calixcryptands can be conveniently prepared by directly treacing p-tert-butylcalix [n]arenes (n = 4, 6) with a multi-functional polypode reagent, e.g.