Abstract An optically active benzoic ester derivative represented by the general formula: ##STR1## wherein R represents a straight chain alkyl group having from 1 to 20 carbon atoms; R' represents a straight chain alkyl group having from 2 to 8 carbon atoms; rings A and B each represents ##STR2## or a trans-1,4-cyclohexane ring; n represents 0 or 1; and C represents an asymmetric carbon atoms. The compounds of formula (I) are capable of providing a chiral nematic liquid crystal composition having a short spiral pitch when added to a nematic liquid crystal composition in a small amount and are useful in the production of SBE display devices having excellent performances in a high level multiplexing driving system.
An optically active benzoic ester derivative represented by the general formula: ##STR26## wherein R represents a straight chain alkyl group having from 1 to 20 carbon atoms; R' represents a straight chain alkyl group having from 2 to 8 carbon atoms; rings A and B each represents ##STR27## or a trans-1,4-cyclohexane ring; n represents 0 or 1; and C represents an asymmetric carbon atom.
Claim 2
Dependent Claim
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An optically active benzoic ester derivative represented by the general formula: ##STR26## wherein R represents a straight chain alkyl group having from 1 to 20 carbon atoms; R' represents a straight chain alkyl group having from 2 to 8 carbon atoms; rings A and B each represents ##STR27## or a trans-1,4-cyclohexane ring; n represents 0 or 1; and C represents an asymmetric carbon atom.
Claim 3
Dependent Claim
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An optically active benzoic ester derivative of claim 1, wherein R is n--C 5 H 11 --, ring A is ##STR28## ring B is ##STR29## R' is n--C 6 H 13 --, and n is 0.
Claim 4
Dependent Claim
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An optically active benzoic ester derivative of claim 1, wherein R is n--C 3 H 7 --, ring A is ##STR30## ring B is ##STR31## R' is n--C 6 H 13 --, and n is 1.
Claim 5
Dependent Claim
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An optically active benzoic ester derivative of claim 1, wherein R is n--C 5 H 11 --, ring A is ##STR32## ring B is ##STR33## R' is n--C 6 H 13 --, and n is 0.
Claim 6
Dependent Claim
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An optically active benzoic ester derivative of claim 1, wherein R is n--C 4 H 9 --, ring A is ##STR34## ring B is ##STR35## R' is n--C 6 H 13 --, and n is 0.