ACETYLENE DERIVATIVE, PROCESS FOR PRODUCING THE SAME, LIQUID CRYSTAL COMPOSITION CONTAINING THE SAME AS ACTIVE INGREDIENT, AND LIQUID CRYSTAL ELEMENT MADE THEREFROM.

摘要

An acetylene derivative represented by general formula (I), wherein R<1> represents C3-C20 saturated or unsaturated alkyl; R<2> represents optionally halogenated C1-C20 saturated or unsaturated alkyl or C2-C20 alkoxyalkyl; A and B represent each phenylene, etc., or alternatively -A-B- represents naphthylene, etc.; m and s represent each 0 or 1; n represents 0 or an integer of 1 through 6; and the symbol * represents an asymmettric carbon atom.