Generation-independent dimerization behavior of quadruple hydrogen-bond-containing oligoether dendrons

被引：55

作者：

Wong, CH ^{[1
]}

Chow, HF

Hui, SK

Sze, KH

机构：

[1] Chinese Univ Hong Kong, Dept Chem, Shatin, Hong Kong, Peoples R China

[2] Chinese Univ Hong Kong, Ctr Novel Funct Mol, Shatin, Hong Kong, Peoples R China

[3] Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China

来源：

ORGANIC LETTERS | 2006年 / 8卷 / 09期

关键词：

D O I：

10.1021/ol0603716

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A new series of self-assembling G1-G3 dendronized dimers bearing oligoether dendrons and a dimeric 2-ureido-4-pyrimidinone (UPy) quadruple hydrogen-bonding core were prepared and characterized. It was found that the nonpolar microenvironment created by the dendrons preserved the UPy unit in its DDAA tautomeric form. As a result, the stabilities of the dimers were exceptionally strong for all three generations (K-dim(.) > 2 x 10(7) M-1 in CDCl3 at 25 degrees C). Furthermore, the steric size of the dendrons did not exhibit a significant effect on their dimerization behavior.

引用

页码：1811 / 1814

页数：4

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