Optically active compound having delta-valerolactone ring and liquid crystal composition comprising same
申请人:MITSUBISHI RAYON CO., LTD.
公开号:EP0313379A2
公开(公告)日:1989-04-26
An optically active compound having a 8-valerolactone ring, which is represented by the formula:
wherein m is an integer of 1 to 8, Z is a group of the formula:
in which each of ℓ and k is 1 or 2 and and k satisfy the requirement of 2 ≦ (ℓ + k) ≦ 3, X stands for a direct bond,
Y stands for
and A1 and A2 independently for -H, -F or -Gℓ,
or
R stands for
or
in which n is an integer of from 1 to 18, and * indicates the asymmetric carbon atom.
This optically active compound is valuable as a ferroelectric liquid crystal having a large spontaneous polarization or as an additive to a ferroelectric liquid crystal composition.
一种具有 8-戊内酯环的光学活性化合物,由式表示:
其中 m 是 1 至 8 的整数,Z 是式中的基团:
其中 ℓ 和 k 各为 1 或 2,且 ℓ 和 k 满足 2 ≦ (ℓ + k) ≦ 3 的要求,X 代表直接键、
Y 代表
A1 和 A2 分别代表 -H、-F 或 -Gℓ、
或
R 代表
或
其中 n 为 1 至 18 的整数,* 表示不对称碳原子。
这种光学活性化合物作为具有较大自发极化的铁电液晶或作为铁电液晶组合物的添加剂非常有价值。
US5045228A
申请人:——
公开号:US5045228A
公开(公告)日:1991-09-03
Optically active compound having XI-valerolactone ring and liquid
申请人:Mitsubishi Rayon Company Ltd.
公开号:US05045228A1
公开(公告)日:1991-09-03
An optically active compound having a .delta.-valerolactone ring which is a ferroelectric liquid crystal and is represented by the following general formula (I): ##STR1## wherein m is an integer of from 1 to 8, Z is a group represented by the following formula: ##STR2## in which each of l and k is a number of 1 or 2 and l and k satisfy the requirement of 2.ltoreq.(l+k).ltoreq.3, X stands for a direct bond, ##STR3## Y stands for ##STR4## and A.sub.1 and A.sub.2 independently stand for --H, --F or --Cl, ##STR5## R stands for ##STR6## in which n is an integer of from 1 to 18, and * indicates the asymmetric carbon atom.