Optically active ester compound

Details Optically active ester compound Optically active ester compound

1988-09-08

1990-09-25

Maples, John S.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229901, 560 59, C09K 1912

Patent

active

049591738

ABSTRACT:
An optically active ester of the formula ##STR1## wherein p is 0 or 1, q is 1 or 2, r is 1 or 2, q+r is 3, and s is 0 or 1. R.sub.1 and R.sub.2 in the above formula are each independently selected from the group consisting of C.sub.6-18 straight chain alkyl and an optically active group of the formula ##STR2## and in which m is 2 to 5, n is 1 or 2, X is hydrogen or chlorine, R.sub.3 is hydrogen or C.sub.1-11 straight chain alkyl, and C.sup.* represents a chiral carbon atom, with the proviso that when n is 1 and X is hydrogen, R.sub.3 is C.sub.1-11 straight chain alkyl. When q is 2 and r is 1 and R.sub.1 is C.sub.6-18 straight chain alkyl, p is 1; on the other hand, when q is 1 and r is 2 and R.sub.2 is an optically active group of the above formula, s is 1. One of R.sub.1 and R.sub.2 is an optically active group of the above formula, and the other of R.sub.1 and R.sub.2 is C.sub.6-18 straight chain alkyl.

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