Optically active ester derivatives, preparation process thereof,

Details Optically active ester derivatives, preparation process thereof, Optically active ester derivatives, preparation process thereof,

1989-08-28

1992-06-23

Lovering, Richard D.

Compositions

Liquid crystal compositions

Containing nonsteryl liquid crystalline compound of...

25229967, 560 55, 560 59, 560 60, 560 61, 560 62, 560 64, 560 65, 560 73, 560102, 560103, 560105, 560107, 560108, 560109, 560111, 560112, C09K 1912, C09K 1920, C07C 6976

Patent

active

051240700

ABSTRACT:
Disclosed are herein optically active ester derivatives represented by the formula (I): ##STR1## (wherein R.sub.1 represents an alkyl group having 3 to 20 carbon atoms; R.sub.2 represents an optically active alkyl or alkoxyalkyl group having 3 to 15 carbon atoms optionally substituted by halogen atoms; Y represents --O--, --COO-- or --OCO--; X represents --COO-- or --OCO--; l represents a number of 1 or 2; k and m each represents a number of 0 or 1; n represents a number of 1 to 6), preparation processes therefor, liquid crystal materials containing such ester derivatives as active ingredient, and a light switching element using said liquid crystal materials as liquid crystal element.

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