Liquid crystalline alkenyl compounds incorporating an heterocyclic five-membered ring
申请人:Qinetiq Limited
公开号:US06696110B1
公开(公告)日:2004-02-24
Liquid crystal mixtures comprising at least one of the compounds of formula (I) containing a heterocyclic five-membered ring and with a carbon-carbon double bond in the termninal group are new.
RJ=CnH2n+1CH=CHCmH2mZ1; n=1-5; m=0-5; and q=0, 1 or 2; A1 and A2=2,5-disubstituted furan, 2,5-disubstituted thiophene, 2,5-disubstituted oxazole, 2,5-disubstituted thiazole, 2,5-disubstituted 1,3,4-oxadiazole, 2,5-disubstituted 1,3,4-thiadiazole, 1,4-disubstituted benzene, 2,5-disubstituted pyrimidine, 2,5-disubstituted pyridine, 2,6-disubstituted naphthalene; laterally substituted 1,4-disubstituted benzene, laterally substituted 2,5-disubstituted pyrimidine, laterally substituted 2,5-disubstituted pyridine or laterally substituted 2,6-disubstituted naphthalene (lateral substituents=F, Cl, Br or CN); A3=any A1 or 1,4-disubstituted bicyclo(2.2.2)octane, trans-1,4-disubstituted cyclohexane, trans-2,5-disubstituted dioxane or 1,4-disubstituted piperidine; Z1=O, COO or OOC; Z2 and Z3=direct bond, COO, OOC, C2H4, CH2O, OCH2, C4H8, C3H6O, (E)-CH═CHC2H4, (Z)-CH2CH═CHCH2, (E)-CH═CHCH2O or —C equivalent to C—; R=1-20C alkyl, alkoxy, alkenyl, alkenyloxy, alkanoyloxy, alkenoyloxy or OCpF2p+1; and p=1-20. When Z1=O and m=1, 3 or 5 the carbon-carbon double bond configuration in RJ is E. When Z1=O and m=2 or 4 the carbon-carbon double bond configuration in RJ is Z. When Z1=COO or OOC and m=0, 2 or 4 the carbon-carbon double bond configuration in RJ is E. When Z1=COO or OOC and m=1, 3 or 5 the carbon-carbon double bond configuration in RJ is Z.
含有式(I)中至少一种化合物的液晶混合物是新的,该化合物含有一个杂环五元环,并且在末端基团中含有一个碳-碳双键。其中,RJ=CnH2n+1CH=CHCmH2mZ1,n=1-5,m=0-5,q=0、1或2;A1和A2=2,5-二取代呋喃、2,5-二取代噻吩、2,5-二取代噁唑、2,5-二取代噻唑、2,5-二取代1,3,4-噁二唑、2,5-二取代1,3,4-噻二唑、1,4-二取代苯、2,5-二取代嘧啶、2,5-二取代吡啶、2,6-二取代萘;侧基取代的1,4-二取代苯、侧基取代的2,5-二取代嘧啶、侧基取代的2,5-二取代吡啶或侧基取代的2,6-二取代萘(侧基= F、Cl、Br或CN);A3=任何A1或1,4-二取代双环[2.2.2]辛烷、反式-1,4-二取代环己烷、反式-2,5-二取代二氧六环或1,4-二取代哌啶;Z1=O、COO或OOC;Z2和Z3=直接键、COO、OOC、C2H4、CH2O、OCH2、C4H8、C3H6O、(E)-CH=CHC2H4、(Z)-CH2CH=CHCH2、(E)-CH=CHCH2O或-C等于C-;R=1-20C烷基、烷氧基、烯基、烯氧基、烷酰氧基、烯酰氧基或OCpF2p+1;p=1-20。当Z1=O且m=1、3或5时,RJ中的碳-碳双键构型为E。当Z1=O且m=2或4时,RJ中的碳-碳双键构型为Z。当Z1=COO或OOC且m=0、2或4时,RJ中的碳-碳双键构型为E。当Z1=COO或OOC且m=1、3或5时,RJ中的碳-碳双键构型为Z。