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.
液晶混合物包括至少一种具有含有杂环五元环的化合物的化学式(I),并在末端基团中含有碳-碳双键的新化合物。 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-硫二唑、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;侧链取代1,4-二取代苯、侧链取代2,5-二取代嘧啶、侧链取代2,5-二取代吡啶或侧链取代2,6-二取代萘(侧链取代物=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-2,5-二取代二氧杂环丁烷或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)-CH2CHCH2CH2、(Z)-CH2CHCHCH2、(E)-CH2CHCH2O或等同于C的-C-;R=1-20碳原子的烷基、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。