摘要:
A liquid crystal composition comprising one or more types compounds represented by general formula II: ##STR1## and one or more types of compounds selected from the group consisting of: ##STR2## wherein R, rings A and B, X, Y1, Y2, Y3, Y4 and m are defined herein.
摘要:
A silacyclohexane compound represented by the following general formula (I): ##STR1## wherein R denotes a mono- or di-fluoroalkyl group with 1-10 carbons: ##STR2## denotes a trans-1-silacyclohexylene or a trans-4-silacyclohexylene group whose silicon at position 1 or position 4 has a substitutional group of H, F, Cl or CH.sub.3 ; X denotes a CN, F, Cl, CF.sub.3, CF.sub.2 Cl, CHFCl, OCF.sub.3, OCHF.sub.2, OCF.sub.2 Cl, OCHFCl, (O).sub.3 CY.sub.1 .dbd.CX.sub.1 X.sub.2 (X.sub.1 and Y.sub.1 denote H, F or Cl, and X.sub.2 denotes F or Cl) (O).sub.3 C.sub.p H.sub.q F.sub.r (p denotes 2, 3 or 4, and q and r are integers which satisfy the equation q+r=2p+1, and s denotes 0 or 1), the aforementioned R, or an alkyl or alkoxy group with 1-5 carbons; Y denotes H or F; and Z denotes H or F; and process of manufacturing same.
摘要:
A silacyclohexane compound of the following formula (I) ##STR1## wherein R represents an organic residue; ##STR2## represents a trans-1-sila-1,4-cyclohexylene group or trans-4-sila-1,4-cyclohexylene group having a substituent of H, F, Cl or CH.sub.3 ; L.sub.1 represents F, L.sub.2 and L.sub.3 independently represent H, F, Cl or CH.sub.3 ; X represents an organic residue, F or Cl; and n is an integer of 0, 1, or 2 and a and b are, respectively, 0 or 1 provided that a+b=1. Silacyclohexane compounds are useful in liquid crystal compositions and also in liquid crystal devices.
摘要:
A triflate compound of the following general formula is provided ##STR1## wherein Ar represents a phenyl group or a tolyl group, R represents a phenyl group, a tolyl group, a linear alkyl group having from 1 to 10 carbon atoms, a mono or difluoroalkyl group having from 1 to 10 carbon atoms, a branched alkyl group having from 3 to 8 carbon atoms, an alkoxyalkyl group having from 2 to 7 carbon atoms and an alkenyl group having from 2 to 8 carbon atoms, Tf represents a trifluoromethanesulfonyl group, and Y represents H or F. A process for preparing silacyclohexane-based liquid crystal compounds from the triflate compound is also described.
摘要:
A silacyclohexane carbaldehyde compound of the following formula (I) ##STR1## wherein Ar represents a phenyl group or a tolyl group, and R represents a phenyl group, a tolyl group, a linear alkyl group, a mono or difluoroalkyl group, a branched alkyl group, an alkoxyalkyl group or an alkenyl group. Processes for preparing a silacyclohexane-based liquid crystal compound of the following formula (II) or (III) from the silacyclohexane carbaldehyde are also described ##STR2## wherein X represents CN, F, Cl, CF.sub.3, CClF.sub.2, CHClF, OCF.sub.3, OCClF.sub.2, OCHF.sub.2, OCHClF, (O).sub.m CT=CX.sub.1 X.sub.2, O(CH.sub.2).sub.r (CF.sub.2).sub.s X.sub.3, R or OR wherein m is a value of 0 or 1, T and X.sub.1 independently represent H, F or Cl, X.sub.2 represents F or Cl, r and s are, respectively, a value of 0, 1 or 2 provided that r+s=2, 3 or 4, X.sub.3 represents H, F or Cl, and R has the same meaning as defined before, Y and Z independently represent a halogen or a methyl group, i and j are independently a value of 0, 1 or 2.
摘要:
A cyclohexane carbaldehyde compound of the following formula (I) ##STR1## wherein Ar represents a phenyl group or a tolyl group, and R represents a phenyl group, a tolyl group, a linear alkyl group, a mono or difiuoroalkyl group, a branched alkyl group or an alkoxyalkyl group. Processes for preparing a silacyclohexane-based liquid crystal compound of the following formula (II) or (III) from the cyclohexane carbaldehyde are also described ##STR2## wherein R represents a phenyl group, a tolyl group, a linear alkyl group, a mono or difiuoroalkyl group, a branched alkyl group or an alkoxyalkyl group, X represents R or OR, in which R has the same meaning as defined above, CN, F, C1, Br, CF.sub.3, OCF.sub.3, OCHFCL, OCF.sub.2 Cl, CF.sub.2 Cl, (O).sub.m CY.sub.1 =CX.sub.1 X.sub.2, O(CH.sub.2).sub.r (CF.sub.2).sub.s X.sub.3, wherein m is a value of 0 or 1, Y.sub.1 and X.sub.1 independently represent H, F or Cl, X.sub.2 represents F or Cl, r and s are, respectively, a value of 0, 1 or 2 provided that r+s=2, 3 or 4, and X.sub.3 represents H, F or Cl, Y represents a halogen or a methyl group, Z represents a halogen or CH.sub.3, i is a value of 0, 1 or 2, and j is a value of 0, 1 or 2.
摘要翻译:下式(I)的环己烷甲醛化合物其中Ar表示苯基或甲苯基,R表示苯基,甲苯基,直链烷基,单或二氟烷基, 支链烷基或烷氧基烷基。 还描述了从环己烷甲醛制备下式(II)或(III)的硅环己烷基液晶化合物的方法,其中苯基,甲苯基,直链烷基,单或二氟烷基,支链 烷基或烷氧基烷基,X表示R或OR,其中R的定义同上,CN,F,C1,Br,CF3,OCF3,OCHFCL,OCF2Cl,CF2Cl,(O)mCY1 = CX1X2,O (CH 2)r(CF 2)s X 3,其中m为0或1,Y1和X1独立地表示H,F或Cl,X2表示F或Cl,r和s分别为0,1或 2,条件是r + s = 2,3或4,X3表示H,F或Cl,Y表示卤素或甲基,Z表示卤素或CH3,i表示0,1或2, j是0,1或2的值。
摘要:
A silacyclohexane compound of the formulas (I) ##STR1## wherein R represents an organic residue, ##STR2## represents an unsubstituted or substituted silicon-containing cyclohexylene group or a 1,4-cyclohexylene group, ##STR3## represents an unsubstituted or substituted phenylene, an unsubstituted or substituted silicon-containing cyclohexylene group or trans-4-sila-1,4-cyclohexylene group, or a 1,4-cyclohexylene group provided that at least one of these residues represents a silicon-containing cyclohexylene group, j, k and l are, respectively, 0 or 1, L.sub.1 and L.sub.2, respectively, represent H or F, m and n are, respectively, 0, 1 or 2 provided that m+n=2, 3 or 4, and X represents H, F or Cl. A liquid crystal composition comprising the silacyclohexane compound of the above formula is also described, along with a liquid crystal device comprising the composition.
摘要翻译:式(I)的硅环己烷化合物,其中R表示有机残基,表示未取代或取代的含硅亚环己基或1,4-亚环己基,表示未取代或取代的亚苯基,未取代或取代的含硅亚环己基 基团或反式-4-硅烷-1,4-亚环己基或1,4-亚环己基,条件是这些残基中的至少一个表示含硅的亚环己基,j,k和l分别为0或 1,L1和L2分别表示H或F,m和n分别为0,1或2,条件是m + n = 2,3或4,X表示H,F或Cl。 还描述了包含上式的硅环己烷化合物的液晶组合物以及包含该组合物的液晶装置。
摘要:
A silacyclohexane compound of the following formula (I) ##STR1## wherein R is an unsubstituted or substituted organic residue, W is H, F, Cl or methyl, X is CN, F, Cl or an unsubstituted or substituted organic residue, and Y and Z independently represent H, F or Cl. The silacyclohexane compounds are useful in liquid crystal compositions and also in liquid crystal devices.
摘要:
A silacyclohexane compound of the following formula (I) ##STR1## wherein R represents an organic residue; at least one of ##STR2## represents a substituted or unsubstituted trans-1-sila-1,4-cyclohexylene group or trans-4-sila-1,4-cyclohexylene group and the other represents a trans-1,4-cyclohexylene group, L.sub.1 and L.sub.2 independently represent H, F, Cl or CH.sub.3 ; X represents an organic residue or CN, F, Cl; and m and n are, respectively, 0 or 1 provided that m+n=1. Silacyclohexane compounds are useful in liquid crystal compositions and also in liquid crystal devices.
摘要翻译:下式(I)的硅环己烷化合物其中R表示有机残基; “IMAGE”中的至少一个表示取代或未取代的反式-1-硅烷-1,4-亚环己基或反式-4-硅烷-1,4-亚环己基,另一个表示反式-1,4-亚环己基 ,L1和L2独立地表示H,F,Cl或CH3; X表示有机残基或CN,F,Cl; 如果m + n = 1,则m和n分别为0或1。 硅环己烷化合物可用于液晶组合物和液晶装置中。
摘要:
A process for preparing a silacyclohexane compound of the general formula ##STR1## wherein R and Q are, respectively, defined substituents, which process comprising the steps of converting a compound of the following formula ##STR2## to a halosilacyclohexane of the following formula ##STR3## wherein X is a halogen, reacting the halosilacyclohexane with an alcohol to obtain an alkoxysilacyclohexane of the formula which is equilibrated in steric configuration, and ##STR4## reducing the equilibrated alkoxysilacyclohexane whereby a trans form silacyclohexane compound is predominantly produced.
摘要翻译:制备通式为“IMAGE”的硅环己烷化合物的方法,其中R和Q分别为限定的取代基,该方法包括以下步骤:将下式的化合物转化为下式的卤代环己烷:IMA IMA >其中X是卤素,使卤代二环己烷与醇反应,得到在空间结构中平衡的式的烷氧基硅烷环己烷,并且还原平衡的烷氧基硅烷环己烷,由此主要生产反式形式的硅环己烷化合物。