Noncovalent Interactions in the Asymmetric Synthesis of Rigid, Conjugated Helical Structures

被引：60
|
作者：
Miyasaka, Makoto [1 ]
Pink, Maren [2 ]
Rajca, Suchada [1 ]
Rajca, Andrzej [1 ]
机构：
[1] Univ Nebraska, Dept Chem, Lincoln, NE 68588 USA
[2] Indiana Univ, Dept Chem, IUMSC, Bloomington, IN 47405 USA
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2009年 / 48卷 / 32期
基金：
美国国家科学基金会;
关键词：
asymmetric synthesis; chirality; chiroptical properties; helical structures; helicenes; ENANTIOSELECTIVE SYNTHESIS; CYCLOISOMERIZATION; RESOLUTION; OLIGOTHIOPHENES; HELICENES; ROUTE;
D O I：
10.1002/anie.200901349
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
From helical folding to helical locking: Tetrakis(β- trithiophene) 1 folds into a helical conformation (RRR) that facilitates double ring annelation, with high diastereoselectivity and modest enantioselectivity, to provide bis[7]helicene 2 (MRM). This rigid, helically locked structure has enhanced chiroptical properties similar to the corresponding [15]helicene. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码：5954 / 5957
页数：4
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