申请人:Hoffmann-La Roche Inc.
公开号:US05360577A1
公开(公告)日:1994-11-01
Optically active compounds of the general formula ##STR1## wherein n stands for the number 0 or 1; R.sup.3 denotes a group R.sup.4 or a group of the general formula ##STR2## A.sup.1, A.sup.2 and A.sup.3 each independently represent 1,4-phenylene, which is unsubstituted or mono- or multiply-substituted with halogen, cyano and/or methyl and in which, where it is unsubstituted, 1 or 2 CH groups is/are optionally replaced by nitrogen, trans-1,4-cyclohexylene, trans-1,3-dioxane-2,5-diyl, bycyclo[2.2.2]octane-1,4-diyl, naphthalene-2,6-diyl, tetralin-2,6-diyl or trans-decalin-2,6-diyl; Z.sup.1 and Z.sup.4 each independently signify a single covalent bond or --CH.sub.2 CH.sub.2 --; Z.sup.2 and Z.sup.3 each independently denote a single covalent bond, --CH.sub.2 CH.sub.2 --, --COO--, --OOC--, --CH.sub.2 O--, --OCH.sub.2 --, --C.tbd.C--, --(CH.sub.2).sub.4 --, --(CH.sub.2).sub.3 O--, --O(CH.sub.2).sub.3 -- or the trans form of --CH.dbd.CH--CH.sub.2 CH.sub.2 --, --CH.sub.2 CH.sub.2 --CH.dbd.CH--, --CH.dbd.CH--CH.sub.2 O-- or --OCH.sub.2 --CH.dbd.CH--; R.sup.1 and R.sup.5 each independently signify alkyl with 1 to 12 carbon atoms, alkoxymethyl with 2 to 12 carbon atoms, p-alkoxyphenyl or p-alkoxybenzyl; R.sup.2 and R.sup.6 each independently signify hydrogen, alkyl with 1 to 12 carbon atoms or phenyl; R.sup.4 denotes hydrogen, halogen, cyano, trifluoromethyl, trifluoromethoxy or alkyl or alkenyl with 1 to 12 and, respectively, 2 to 12 carbon atoms, which are unsubstituted or mono- or multiply-substituted with halogen, cyano and/or methyl and in which one methylene group or two non-adjacent methylene groups can be replaced by --O--, --COO-- and/or --OOC--; and the oxazoline ring in formula I is present in optically active form, liquid crystalline mixtures which contain such dopants and their use for optical and electro-optical purposes.
通式为##STR1##的光学活性化合物,其中n代表数字0或1;R.sup.3表示R.sup.4基团或通式##STR2##的基团;A.sup.1,A.sup.2和A.sup.3分别独立表示未取代或单取代或多取代卤素、氰基和/或甲基的1,4-苯撑基,并且在未取代时,1或2个CH基团可以选用氮代替,trans-1,4-环己撑基,trans-1,3-二氧杂环己撑-2,5-二基,双环[2.2.2]辛烷-1,4-二基,萘-2,6-二基,四氢萘-2,6-二基或trans-癸烷-2,6-二基;Z.sup.1和Z.sup.4各自独立表示单共价键或--CH.sub.2 CH.sub.2--;Z.sup.2和Z.sup.3各自独立表示单共价键,--CH.sub.2 CH.sub.2--,--COO--,--OOC--,--CH.sub.2 O--,--OCH.sub.2--,--C.tbd.C--,--(CH.sub.2).sub.4--,--(CH.sub.2).sub.3 O--,--O(CH.sub.2).sub.3--或--CH.dbd.CH--CH.sub.2 CH.sub.2--的trans形式,--CH.sub.2 CH.sub.2--CH.dbd.CH--,--CH.dbd.CH--CH.sub.2 O--或--OCH.sub.2--CH.dbd.CH--;R.sup.1和R.sup.5各自独立表示含有1至12个碳原子的烷基,含有2至12个碳原子的烷氧甲基,对-烷氧基苯基或对-烷氧基苄基;R.sup.2和R.sup.6各自独立表示氢,含有1至12个碳原子的烷基或苯基;R.sup.4表示氢,卤素,氰基,三氟甲基,三氟甲氧基或含有1至12或2至12个碳原子的烷基或烯基,未取代或单取代或多取代卤素、氰基和/或甲基,并且其中一个亚甲基或两个不相邻的亚甲基可以被--O--,--COO--和/或--OOC--取代;并且在式I中的噁唑环以光学活性形式存在,含有此类掺杂剂的液晶混合物以及它们用于光学和电光目的。