Guest-enhanced kinetic stability of hydrogen-bonded dimeric capsules of tetraurea calix[4]arenes

被引：51

作者：

Vysotsky, MO ^{[1
]}

Böhmer, V ^{[1
]}

机构：

[1] Johannes Gutenberg Univ Mainz, Abt Lehramt Chem, Fachbereich Chem & Pharm, D-55099 Mainz, Germany

来源：

ORGANIC LETTERS | 2000年 / 2卷 / 23期

关键词：

D O I：

10.1021/ol0064967

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

[GRAPHICS] Inclusion complexes of self assembled molecular dimers composed of two tetratolylurea calix[4]arenes show strongly different kinetic stability for different guests. In cyclohexane d(12) half life times for the exchange of a guest against the solvent vary from 2.9 h (chloroform) through 20 h (benzene) and 74 h (fluorobenzene) to 78 days for cyclohexane. This demonstrates that the kinetic stability of such a dimer can be strongly increased by the choice of a suitable guest.

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页码：3571 / 3574

页数：4

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