NEW MATERIAL:The optically active compound of formula I [R and R' are 3-20C alkyl which may have asymmetric carbon atom: X is single bond, O, S, COO or OCOO; A is 2,6-naphthalene group which may have a substituent (F, Cl, NO2 or CN); Y is COO, CH2O or O].
EXAMPLE: Optically active 2-n-decyloxy-6-(1-trifluoromethylheptyloxy-carbonyl) naphthalene.
USE: A component of ferroelectric liquid crystal composition effective in improving the response speed by remarkably increasing spontaneous polarization value of a liquid crystal compound or liquid crystal composition used as the matrix.
PREPARATION: The compound of formula 5 which is one of the compound of formula I can be produced by converting a compound of formula 2 to a compound of formula 3 with thionyl chloride and reacting the product with an optically active alcohol of formula 4 in the presence of a base such as pyridine.
WATANABE TETSUYA
YOSHIO KUNIKIYO
KISHIKI HIROSHI
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