Synthesis of Optically Active Spiro Compounds with a 3,3′-(4H,4′H)-Spirobi(2H-naphtho[1,2-b]pyran) Skeleton and Their Applications as Chiral Dopants for Nematic Liquid Crystals

被引：6
|
作者：
Tojo, Kenta [1 ]
Arisawa, Tatsuya [1 ]
Aoki, Yoshio [1 ]
Terunuma, Daiyo [1 ]
机构：
[1] Saitama Univ, Grad Sch Sci & Engn, Sakura Ku, Saitama 3388570, Japan
来源：
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN | 2009年 / 82卷 / 04期
关键词：
HELICAL TWISTING POWER; RHODIUM-CATALYZED ADDITION; ARYLBORONIC ACIDS; INDUCTION; COMPLEXES;
D O I：
10.1246/bcsj.82.519
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Chiral dopants with a spiro structure for nematic liquid crystals were synthesized from optically active 3,3'-(4H,4'H)-spirobi(2H-naphtho[1,2-b]pyran)-6,6'-dicarboxylicacid, and their helical twisting power (HTP) values were evaluated. Chiral dopants having the S configuration induced minus helices in the host nematic liquid crystals. It was found that the novel ester-lintked spiro chiral dopants exhibited large molar HTP values. In particular, a chiral dopant with two pyrimidine structures in the side chain moiety showed the highest molar HTP value of 62.1 mu m(-1) mol(-1) kg. In contrast, ether-linked chiral dopants showed relatively small molar HTP values.
引用
收藏
页码：519 / 527
页数：9
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