[DE] CHROMAN-DERIVATE SOWIE IHRE VERWENDUNG IN FLÜSSIGKRISTALLINEN MEDIEN [EN] CHROMAN DERIVATIVES AND USE THEREOF IN LIQUID CRYSTAL MEDIA [FR] DERIVES DE CHROMANE, PROCEDES DE PRODUCTION ET UTILISATION DE CES DERIVES
[DE] CHROMAN-DERIVATE SOWIE IHRE VERWENDUNG IN FLÜSSIGKRISTALLINEN MEDIEN [EN] CHROMAN DERIVATIVES AND USE THEREOF IN LIQUID CRYSTAL MEDIA [FR] DERIVES DE CHROMANE, PROCEDES DE PRODUCTION ET UTILISATION DE CES DERIVES
Chromane Derivatives Method for Production and the Use Thereof
申请人:Klein Markus
公开号:US20080020148A1
公开(公告)日:2008-01-24
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.