THE SYNTHESIS AND TRANSITION-TEMPERATURES OF NOVEL LOW MOLAR MASS CHOLESTERIC MATERIALS DERIVED FROM (R)-2-(4-HYDROXYPHENOXY)PROPANOIC ACID

被引:8
作者
BOOTH, CJ [1 ]
GRAY, GW [1 ]
TOYNE, KJ [1 ]
HARDY, J [1 ]
机构
[1] ICI PAINTS,DIV RES,SLOUGH SL2 5DS,ENGLAND
来源
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1992年 / 210卷
关键词
CHOLESTERICS; 2-SUBSTITUTED PROPANOATES; 2-SUBSTITUTED PROPANONITRILES; ENANTIOMERIC EXCESS; CHIRAL SHIFT REAGENT;
D O I
10.1080/10587259208030756
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A comprehensive series of (R)-2-(4-substituted-phenoxy)propanoates and (R)-2-(4-substituted-phen-oxy)propanonitriles have been prepared. A wide variety of 4-substituents and ester functions have been examined to determine how the position of the chiral centre affects the cholesteric phase formation in these classes of materials; the synthesis of these novel materials, their transition temperatures and a procedure for assessing their optical purity are described and discussed. Mesogenicity is significantly depressed if the chiral centre is placed centrally within the molecule. © 1992, Taylor & Francis Group, LLC. All rights reserved.
引用
收藏
页码:31 / 57
页数:27
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