4,4'-DISTYRYLAZOBENZENE AS MESOGEN

被引：21

作者：

KOSTEYN, F ^{[1
]}

ZERBAN, G ^{[1
]}

MEIER, H ^{[1
]}

机构：

[1] UNIV MAINZ,INST ORGAN CHEM,JJ BECHER WEG 18-22,W-6500 MAINZ,GERMANY

来源：

CHEMISCHE BERICHTE-RECUEIL | 1992年 / 125卷 / 04期

关键词：

4,4'-DISTYRYLAZOBENZENES, ALKOXY; SIEGRIST REACTION; LIQUID CRYSTALS;

D O I：

10.1002/cber.19921250421

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

From 3,4-dihydroxybenzaldehyde (1) the tetraalkoxy-substituted 4,4'-distyrylazobenzenes (E,E,E)-5a-c are synthesized. A similar reaction sequence leads from ethyl 3,4,5-trihydroxybenzoate (6) to the hexaalkoxy-substituted 4,4'-distyrylazobenzenes (E,E,E)-11b,c. With the exception of 5a all products show thermotropic LC properties. Smectic phases have been characterized by polarizing microscopy and by differential scanning calorimetry.

引用

页码：893 / 897

页数：5

共 36 条

[11]

FLETCHER IJ, 1987, ADV HETEROCYCL CHEM, V23, P117

[12] METALLOMESOGENS - METAL-COMPLEXES IN ORGANIZED FLUID PHASES [J].

GIROUDGODQUIN, AM ;

MAITLIS, PM .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1991, 30 (04) :375-402

[13]

Giround-Godquin A., 1991, ANGEW CHEM, V103, P370

[14]

Gray G. W., 1987, THERMOTROPIC LIQUID, V22

[15]

HILSUM C, 1983, LIQUID CRYSTALS THEI

[16]

Kelker H., 1980, HDB LIQUID CRYSTALS

[17]

KOSWIG HD, 1985, FLUSSIGE KRISTALLE

[18]

KOSWIG HD, 1990, SELECTED TOPICS LIQU

[19]

MALTHETE J, 1985, J PHYS LETT-PARIS, V46, pL875, DOI 10.1051/jphyslet:019850046018087500

[20] INVESTIGATIONS ON THE FORMATION OF LIQUID-CRYSTALS BY DISTYRYLBENZENES WITH ALKOXY CHAINS [J].

MEIER, H ;

PRASS, E ;

ZERBAN, G ;

KOSTEYN, F .

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES, 1988, 43 (07) :889-896

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