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    • 2. 发明申请
    • DIFLUOROPHENYL PYRIMIDYL PYRIDINE DERIVATIVES AND THE USE THEREOF IN LIQUID CRYSTAL MIXTURES
    • DIFLUORPHENYLPYRIMIDYLPYRIDIN衍生物及其IN的液晶混合物
    • WO1997024351A1
    • 1997-07-10
    • PCT/EP1996005774
    • 1996-12-20
    • HOECHST AKTIENGESELLSCHAFTNONAKA, ToshiakiLI, JiTAKEICHI, AyakoHORNUNG, BarbaraMANERO, JavierSCHMIDT, WolfgangWINGEN, Rainer
    • HOECHST AKTIENGESELLSCHAFT
    • C07D405/04
    • C07D401/04C07D405/14C09K19/0225C09K19/3003C09K19/34C09K19/3466C09K19/42
    • The invention relates to difluorophenyl pyrimidyl pyridine derivatives of the formula (I), in which the symbols have the following meanings: X is N and Y is CH or X is CH and Y is N; R , R are independently or both (a) an unbranched or branched alkyl chain with 1 to 20 atoms, in which (aa) one or a plurality of non-adjacent and non-terminal CH2-groups can be replaced by -O-,-CO-O-, -O-CO-, -O-CO-O-, -Si(CH3)2-, and/or (ab) one or a plurality of H-atoms can be replaced by F, and/or (ac) the terminal CH3 group can be replaced by one of the chiral groups (1)-(7) (optically active or racemic); (b) hydrogen, wherein only one of the two radicals R , R may be H, provided that R may not be bonded to the pyridine ring by way of -CO-O- or -O-CO-O-; R , R , R are independently or both hydrogen or a straight-chained or branched alkyl radical with 1-16 C-atoms (with or without an asymmetrical C-atom), in which one or a plurality of non-adjacent, non-terminal CH2-groups can be replaced by -O-, and/ or one or a plurality of H-atoms of the alkyl radical can be substituted by -F; R and R can also be -(CH2)4- or-(CH2)5- together, when they are bound to a dioxolane system. Said derivatives are particularly suitable as constituents, in particular, for ferroelectric liquid crystal mixtures.
    • Difluorphenylpyrimidylpyridin式(I)其中各符号具有以下含义的衍生物:X是N且Y是CH或X是CH且Y是N; [R <1>,R <2>是相同的或不同的一个)具有1至20个碳原子,其中aa)的一个或多个非相邻和非终端CH的直链或支链烷基链2个基团可以被-O - , - CO - 取代 O-,-O-CO-,-O-CO-O-,-Si(CH 3)2 - 可被取代,和/或AB)一个或多个H原子可以被F取代,和/或AC) (光学活性的或外消旋的)可以被替换(7)中,b)氢,其中只有两个基团的一个R <1>,R <2>可以是H, - 终端CH 3基团由手性基团中的一个(1) 其条件是R <1>可以不经由-CO-O-或-O-CO-O-吡啶环键合; [R <3>,R <4>,R <5>是相同的或不同的并且是氢或直链或支链烷基具有1-16个碳原子(具有或不具有不对称碳原子),其中一个或多个非相邻的, 末端CH 2个基团可以被-O-取代,和/或其中所述烷基可被-F取代的一个或多个H原子; [R <4>和R <5>也可以一起是 - (CH2)4-或 - 5-(CH 2)当它们被结合到一个系统二氧戊环,特别是适合作为用于铁电液晶的混合物组分。