申请人:Merck Patent Gesellschaft Mit Beschraenkter Haftung
公开号:US05167859A1
公开(公告)日:1992-12-01
2,5-Disubstituted heterocycles of the formula I ##STR1## in which R.sup.1 and R.sup.2, each independently of one another, are alkyl, alkenyl or oxaalkyl having up to 12 C atoms, L.sup.1 and L.sup.2, each independently of one another are H or F, Y is --O--, --CO--O--, --O--CO-- or a single bond, m is 1 or 2, Z is H, F, OH or alkyl having up to 5 C atoms, and Q is --O--, --O--CO--, or if Z is fluorine or hydroxyl, is also be a single bond are suitable as components of ferroelectric mixtures.
式I中,2,5-二取代杂环化合物的结构为:##STR1## 其中,R.sup.1和R.sup.2分别独立地为具有最多12个碳原子的烷基、烯基或氧代烷基,L.sup.1和L.sup.2分别独立地为H或F,Y为--O--, --CO--O--, --O--CO--或单键,m为1或2,Z为H、F、OH或具有最多5个碳原子的烷基,如果Z为氟或羟基,则Q也可以为单键,这些化合物适用于作为铁电混合物的组分。