申请人:Clariant International Ltd.
公开号:US07052742B1
公开(公告)日:2006-05-30
Fluorinated five-membered ring compounds of the formula (I)
R1—X—(A1—M1)a—(A2—M2)b—A3—Y—E (I)
where E is a radical T—Z—R2 containing a five-membered ring and, for example,
T is undirected and is 4-fluorothiophene-2,5-diyl, 3-fluorothiophene-2,5-diyl, 3-fluorothiophene-2,4-diyl, 5-fluorothiophene-2,4-diyl, furan-2,5-diyl, furan-2,4-diyl, isoxazole-3,5-diyl, thiazole-2,5-diyl, thiazole-2,4-diyl, cyclopentane-1,3-diyl or cyclopentene-1,3-diyl,
R1 and R2 are hydrogen,
X is a single bond, —O—, OC(═O)—, —C(═O)O— or —OC(═O)O—,
Y is —OC(═O)—, —OCH2—, —CH2CH2—,
Z is a single bond or —O—,
A1, A2, A3 are each, independently of one another, phenylene-1,4-diyl,
M1, M2 are undirected and are each, independently of one another, —OC(═O)—, —OCH2—, —CH2CH2—, —OC(═O)CH2CH2—, —OCH2CH2CH2—, —C≡C—, —CH2CH2CH2CH2— or a single bond,
a, b are each, independently of one another, 0 or 1,
are used in FLC mixtures.
式(I)的氟代五元环化合物为R1-X-(A1-M1)a-(A2-M2)b-A3-Y-E,其中E为含有五元环的基团T-Z-R2,例如,T为不定向的,为4-氟噻吩-2,5-二基,3-氟噻吩-2,5-二基,3-氟噻吩-2,4-二基,5-氟噻吩-2,4-二基,呋喃-2,5-二基,呋喃-2,4-二基,异噁唑-3,5-二基,噻唑-2,5-二基,噻唑-2,4-二基,环戊烷-1,3-二基或环戊烯-1,3-二基,R1和R2为氢,X为单键,-O-,OC(═O)-,-C(═O)O-或-OC(═O)O-,Y为-OC(═O)-,-OCH2-,-CH2CH2-,Z为单键或-O-,A1、A2、A3各自独立地为苯基-1,4-二基,M1、M2为不定向的,各自独立地为-OC(═O)-,-OCH2-,-CH2CH2-,-OC(═O)CH2CH2-,-OCH2CH2CH2-,-C≡C-,-CH2CH2CH2CH2-或单键,a、b各自独立地为0或1,用于FLC混合物中。