The present invention relates to chromane derivatives of the general formula I
and of the general formula (II)
and chromene derivatives of the general formulae (III) and (IV)
and chromene derivatives of the general formulae (V) and (VI)
in which R
1
, R
2
, A
1
, A
2
, Z
1
, Z
2
, L
1
, L
2
, L
3
, L
4
, m and n have the meanings indicated in Claim
1
in relation to the respective formulae, to a process for the preparation thereof, to the use thereof as component(s) in liquid-crystalline media, and to liquid-crystal and electro-optical display elements which contain the liquid-crystalline media according to the invention.
本发明涉及通式I和通式II的
色烷衍
生物,通式III和通式IV的色
烯衍
生物,以及通式V和通式VI的色
烯衍
生物。其中,R1、R2、A1、A2、Z1、Z2、L1、
L2、L3、L4、m和n在各自的式子中具有声明中所示的含义,以及其制备过程、作为
液晶介质组分的用途,以及包含本发明所述
液晶介质的
液晶和电光显示元件。