Cystine-based cyclic oligoureas: a new class of hydrogen-bonding electroneutral anion receptors

被引：24

作者：

Ranganathan, D ^{[1
]}

Lakshmi, C ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Discovery Lab, Hyderabad 500007, Andhra Pradesh, India

来源：

CHEMICAL COMMUNICATIONS | 2001年 / 14期

关键词：

D O I：

10.1039/b102720b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cystine-based symmetrical cyclic oligoureas, synthesized in a one-pot reaction from L-cystine dimethyl ester and triphosgene, are demonstrated to act as versatile neutral receptors for both inorganic and organic anions operating exclusively through hydrogen bonds; H-1 NMR studies have shown that while the cyclic triurea prefers to complex with spherical (halides) and trigonal planar (nitrate) anions, the higher oligomer tetraurea can trap the tetragonal planar squarate dianion with modest efficiency.

引用

页码：1250 / 1251

页数：2

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